You may have Altered Ego enter the battlefield as a copy of any creature on the battlefield, except it enters with X additional +1/+1 counters on it.
0 /
0
{U}
Brainstorm
Instant
Draw three cards, then put two cards from your hand on top of your library in any order.
{G}{U}
Coiling Oracle
Creature - Snake Elf Druid
When Coiling Oracle enters the battlefield, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.
1 /
1
{U}{U}
Counterspell
Instant
Counter target spell.
{6}{U}{U}
Dig Through Time
Instant
Delve (Each card you exile from your graveyard while casting this spell pays for {1}.)
Look at the top seven cards of your library. Put two of them into your hand and the rest on the bottom of your library in any order.
{2}{G}
Elemental Bond
Enchantment
Whenever a creature with power 3 or greater enters the battlefield under your control, draw a card.
{G}
Elvish Mystic
Creature - Elf Druid
{T}: Add {G}.
1 /
1
--
Evolving Wilds
Land
{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
{3}{G}
Explosive Vegetation
Sorcery
Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.
{2}{G}
Farhaven Elf
Creature - Elf Druid
When Farhaven Elf enters the battlefield, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.
1 /
1
{1}{G}
Farseek
Sorcery
Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.
{3}{G}
Frontier Siege
Enchantment
As Frontier Siege enters the battlefield, choose Khans or Dragons.
• Khans -- At the beginning of each of your main phases, add {G}{G}.
• Dragons -- Whenever a creature with flying enters the battlefield under your control, you may have it fight target creature you don't control.
{2}
Gruul Signet
Artifact
{1}, {T}: Add {R}{G}.
{4}{R}{R}
Hellkite Charger
Creature - Dragon
Flying, haste
Whenever Hellkite Charger attacks, you may pay {5}{R}{R}. If you do, untap all attacking creatures and after this phase, there is an additional combat phase.
5 /
5
{4}{R}{R}
Inferno Titan
Creature - Giant
{R}: Inferno Titan gets +1/+0 until end of turn.
Whenever Inferno Titan enters the battlefield or attacks, it deals 3 damage divided as you choose among one, two, or three targets.
6 /
6
{3}{G}{U}{R}
Intet, the Dreamer
Legendary Creature - Dragon
Flying
Whenever Intet, the Dreamer deals combat damage to a player, you may pay {2}{U}. If you do, exile the top card of your library face down. You may look at that card for as long as it remains exiled. You may play that card without paying its mana cost for as long as Intet remains on the battlefield.
6 /
6
{2}
Izzet Signet
Artifact
{1}, {T}: Add {U}{R}.
{G}{U}
Kiora's Follower
Creature - Merfolk
{T}: Untap another target permanent.
2 /
2
{3}
Lifecrafter's Bestiary
Artifact
At the beginning of your upkeep, scry 1.
Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.
{1}{G}{U}{U}
Mystic Snake
Creature - Snake
Flash
When Mystic Snake enters the battlefield, counter target spell.
2 /
2
{G}{G}{U}{U}
Plasm Capture
Instant
Counter target spell. At the beginning of your next precombat main phase, add X mana in any combination of colors, where X is that spell's mana value.
{1}{G}
Rattleclaw Mystic
Creature - Human Shaman
{T}: Add {G}, {U}, or {R}.
Morph {2} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When Rattleclaw Mystic is turned face up, add {G}{U}{R}.
2 /
1
{1}{U}
Reality Shift
Instant
Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)
{2}{G}
Reclamation Sage
Creature - Elf Shaman
When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.
2 /
1
{1}{G}
Sakura-Tribe Elder
Creature - Snake Shaman
Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.
1 /
1
{2}{R}
Sarkhan's Triumph
Instant
Search your library for a Dragon creature card, reveal it, put it into your hand, then shuffle.
{2}{R}
Sarkhan's Triumph
Instant
Search your library for a Dragon creature card, reveal it, put it into your hand, then shuffle.
{G}{U}{R}
Savage Knuckleblade
Creature - Ogre Warrior
{2}{G}: Savage Knuckleblade gets +2/+2 until end of turn. Activate only once each turn.
{2}{U}: Return Savage Knuckleblade to its owner's hand.
{R}: Savage Knuckleblade gains haste until end of turn.
4 /
4
{3}{R}
Shaman of the Great Hunt
Creature - Orc Shaman
Haste
Whenever a creature you control deals combat damage to a player, put a +1/+1 counter on it.
Ferocious -- {2}{G/U}{G/U}: Draw a card for each creature you control with power 4 or greater.
4 /
2
{2}
Simic Signet
Artifact
{1}, {T}: Add {G}{U}.
{2}{G}
Somberwald Sage
Creature - Human Druid
{T}: Add three mana of any one color. Spend this mana only to cast creature spells.
0 /
1
{2}{G}{U}{R}
Surrak Dragonclaw
Legendary Creature - Human Warrior
Flash
This spell can't be countered.
Creature spells you control can't be countered.
Other creatures you control have trample.
6 /
6
{2}{G}{G}
Surrak, the Hunt Caller
Legendary Creature - Human Warrior
Formidable -- At the beginning of combat on your turn, if creatures you control have total power 8 or greater, target creature you control gains haste until end of turn.
5 /
4
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{G}{U}{R}
Temur Ascendancy
Enchantment
Creatures you control have haste.
Whenever a creature with power 4 or greater enters the battlefield under your control, you may draw a card.
{3}
Temur Banner
Artifact
{T}: Add {G}, {U}, or {R}.
{G}{U}{R}, {T}, Sacrifice Temur Banner: Draw a card.
{G}{U}{R}
Temur Charm
Instant
Choose one --
• Target creature you control gets +1/+1 until end of turn. It fights target creature you don't control.
• Counter target spell unless its controller pays {3}.
• Creatures with power 3 or less can't block this turn.
{2}
Thought Vessel
Artifact
You have no maximum hand size.
{T}: Add {C}.
{3}{G}{U}
Urban Evolution
Sorcery
Draw three cards. You may play an additional land this turn.
{5}{R}
Warstorm Surge
Enchantment
Whenever a creature enters the battlefield under your control, it deals damage equal to its power to any target.
{1}{G}
Whisperer of the Wilds
Creature - Human Shaman
{T}: Add {G}.
Ferocious -- {T}: Add {G}{G}. Activate only if you control a creature with power 4 or greater.
0 /
2
{2}{G}
Wood Elves
Creature - Elf Scout
When Wood Elves enters the battlefield, search your library for a Forest card, put that card onto the battlefield, then shuffle.
1 /
1
{2}{G}
Yasova Dragonclaw
Legendary Creature - Human Warrior
Trample
At the beginning of combat on your turn, you may pay {1}{U/R}{U/R}. If you do, gain control of target creature an opponent controls with power less than Yasova Dragonclaw's power until end of turn, untap that creature, and it gains haste until end of turn.
4 /
2
{5}{G}{G}
Zendikar Resurgent
Enchantment
Whenever you tap a land for mana, add one mana of any type that land produced. (The types of mana are white, blue, black, red, green, and colorless.)