Counter target spell unless its controller pays {1}. You create a 1/1 colorless Eldrazi Scion creature token. It has "Sacrifice this creature: Add {C}." ({C} represents colorless mana.)
{4}{R}
Boulder Salvo
Sorcery
Surge {1}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)
Boulder Salvo deals 4 damage to target creature.
{1}{R}
Brute Strength
Instant
Target creature gets +3/+1 and gains trample until end of turn.
{4}{R}
Cinder Hellion
Creature - Hellion
Trample
When Cinder Hellion enters the battlefield, it deals 2 damage to target opponent or planeswalker.
4 /
4
{1}{U}
Coralhelm Guide
Creature - Merfolk Scout Ally
{4}{U}: Target creature can't be blocked this turn.
2 /
1
{4}{U}
Cyclone Sire
Creature - Elemental
Flying
When Cyclone Sire dies, you may put three +1/+1 counters on target land you control. If you do, that land becomes a 0/0 Elemental creature with haste that's still a land.
3 /
4
{1}{G}
Elemental Uprising
Instant
Target land you control becomes a 4/4 Elemental creature with haste until end of turn. It's still a land. It must be blocked this turn if able.
{4}{U}
Exert Influence
Sorcery
Converge -- Gain control of target creature if its power is less than or equal to the number of colors of mana spent to cast this spell.
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
--
Forest
Basic Land - Forest
({T}: Add {G}.)
{4}
Hedron Archive
Artifact
{T}: Add {C}{C}.
{2}, {T}, Sacrifice Hedron Archive: Draw two cards.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{2}{R}
Kazuul's Toll Collector
Creature - Ogre Warrior
{0}: Attach target Equipment you control to Kazuul's Toll Collector. Activate only as a sorcery.
3 /
2
{1}{G}
Lead by Example
Instant
Support 2. (Put a +1/+1 counter on each of up to two target creatures.)
--
Looming Spires
Land
Looming Spires enters the battlefield tapped.
When Looming Spires enters the battlefield, target creature gets +1/+1 and gains first strike until end of turn.
{T}: Add {R}.
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
--
Mountain
Basic Land - Mountain
({T}: Add {R}.)
{X}{R}{R}
Rolling Thunder
Sorcery
Rolling Thunder deals X damage divided as you choose among any number of targets.
{1}{G}
Seek the Wilds
Sorcery
Look at the top four cards of your library. You may reveal a creature or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
{X}{G}{U}
Skyrider Elf
Creature - Elf Warrior Ally
Flying
Converge -- Skyrider Elf enters the battlefield with a +1/+1 counter on it for each color of mana spent to cast it.
0 /
0
{U}
Slip Through Space
Sorcery
Devoid (This card has no color.)
Target creature can't be blocked this turn.
Draw a card.
{U}{R}
Stormchaser Mage
Creature - Human Wizard
Flying, haste
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
1 /
3
{1}{G}
Sylvan Advocate
Creature - Elf Druid Ally
Vigilance
As long as you control six or more lands, Sylvan Advocate and land creatures you control get +2/+2.