At the beginning of your upkeep, put a time counter on As Foretold.
Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold.
{3}{U}{U}
Baral's Expertise
Sorcery
Return up to three target artifacts and/or creatures to their owners' hands.
You may cast a spell with mana value 4 or less from your hand without paying its mana cost.
{2}{G}{U}
Bounty of the Luxa
Enchantment
At the beginning of your precombat main phase, remove all flood counters from Bounty of the Luxa. If no counters were removed this way, put a flood counter on Bounty of the Luxa and draw a card. Otherwise, add {C}{G}{U}.
{4}{G}{G}
Carnage Tyrant
Creature - Dinosaur
This spell can't be countered.
Trample, hexproof
7 /
6
{1}{U}{U}
Disappearing Act
Instant
As an additional cost to cast this spell, return a permanent you control to its owner's hand.
Counter target spell.
{3}
Electrostatic Pummeler
Artifact Creature - Construct
When Electrostatic Pummeler enters the battlefield, you get {E}{E}{E} (three energy counters).
Pay {E}{E}{E}: Electrostatic Pummeler gets +X/+X until end of turn, where X is its power.
1 /
1
{1}
Implement of Ferocity
Artifact
{G}, Sacrifice Implement of Ferocity: Put a +1/+1 counter on target creature. Activate only as a sorcery.
When Implement of Ferocity is put into a graveyard from the battlefield, draw a card.
{3}
Inspiring Statuary
Artifact
Nonartifact spells you cast have improvise. (Your artifacts can help cast those spells. Each artifact you tap after you're done activating mana abilities pays for {1}.)
{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}{U}
Negate
Instant
Counter target noncreature spell.
{5}{U}{U}
Nezahal, Primal Tide
Legendary Creature - Elder Dinosaur
This spell can't be countered.
You have no maximum hand size.
Whenever an opponent casts a noncreature spell, draw a card.
Discard three cards: Exile Nezahal, Primal Tide. Return it to the battlefield tapped under its owner's control at the beginning of the next end step.
7 /
7
{X}{G}{U}
Nissa, Steward of Elements
Legendary Planeswalker - Nissa
+2: Scry 2.
0: Look at the top card of your library. If it's a land card or a creature card with mana value less than or equal to the number of loyalty counters on Nissa, Steward of Elements, you may put that card onto the battlefield.
-6: Untap up to two target lands you control. They become 5/5 Elemental creatures with flying and haste until end of turn. They're still lands.
L:
X
{G}
Oviya Pashiri, Sage Lifecrafter
Legendary Creature - Human Artificer
{2}{G}, {T}: Create a 1/1 colorless Servo artifact creature token.
{4}{G}, {T}: Create an X/X colorless Construct artifact creature token, where X is the number of creatures you control.
1 /
2
{X}{U}{U}
Pull from Tomorrow
Instant
Draw X cards, then discard a card.
{2}{G}{U}
Rashmi, Eternities Crafter
Legendary Creature - Elf Druid
Whenever you cast your first spell each turn, reveal the top card of your library. You may cast it without paying its mana cost if it's a spell with lesser mana value. If you don't cast it, put it into your hand.
2 /
3
{G}{U}
River Hoopoe
Creature - Bird
Flying
{3}{G}{U}: You gain 2 life and draw a card.
1 /
3
{3}{U}{U}
Spell Swindle
Instant
Counter target spell. Create X Treasure tokens, where X is that spell's mana value. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{5}{G}{U}
Tishana, Voice of Thunder
Legendary Creature - Merfolk Shaman
Tishana, Voice of Thunder's power and toughness are each equal to the number of cards in your hand.
You have no maximum hand size.
When Tishana enters the battlefield, draw a card for each creature you control.
* /
*
{2}{U}
Trophy Mage
Creature - Human Wizard
When Trophy Mage enters the battlefield, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle.