Modern Horizons 3

When Breya, Etherium Shaper enters the battlefield, create two 1/1 blue Thopter artifact creature tokens with flying. {2}, Sacrifice two artifacts:...

When Rosheen, Roaring Prophet enters the battlefield, mill six cards. You may put a card with {X} in its mana cost from among them into your hand. ...

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Imskir Iron-Eater enters the battlefield, you draw X...

Destroy each artifact with mana value X or less.

When Rosheen, Roaring Prophet enters the battlefield, mill six cards. You may put a card with {X} in its mana cost from among them into your hand. ...

Revolt — As long as a permanent you controlled left the battlefield this turn, if a source you control would deal noncombat damage to an opponent o...

When Rosheen, Roaring Prophet enters the battlefield, mill six cards. You may put a card with {X} in its mana cost from among them into your hand. ...

Haste {3}{R}, Sacrifice Sarpadian Simulacrum: It deals 4 damage to target creature.

{T}: Add {R}. As Cursed Mirror enters the battlefield, you may have it become a copy of any creature on the battlefield until end of turn, except i...

Haste Whenever Laelia, the Blade Reforged attacks, exile the top card of your library. You may play that card this turn. Whenever one or more cards...

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Imskir Iron-Eater enters the battlefield, you draw X...

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature. (This token's mana cost is {2}{R}.)

Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.) When Imskir Iron-Eater enters the battlefield, you draw X...

When Rosheen, Roaring Prophet enters the battlefield, mill six cards. You may put a card with {X} in its mana cost from among them into your hand. ...

When Skoa, Embermage enters the battlefield, it deals 4 damage to any target. Grandeur — Discard another card named Skoa, Embermage, Sacrifice two ...

You get {E}{E}{E} (three energy counters), then you may pay X {E}. Each player may exile their hand and draw X cards. If X is 7 or more, you may pl...

When Conduit Goblin enters the battlefield, you get {E}{E} (two energy counters). At the beginning of combat on your turn, you may pay {E}. If you ...

Bestow—{R}, Collect evidence 6. (To pay this bestow cost, pay {R} and exile cards with total mana value 6 or greater from your graveyard.) Flying, ...

Noncreature spells you cast from exile have convoke. (Each creature you tap while casting a noncreature spell from exile pays for {1} or one mana o...

Whenever an opponent casts a spell, you may reveal the top card of your library. If you do, you may cast that card without paying its mana cost if ...

Flying Whenever Kaalia of the Vast attacks an opponent, you may put an Angel, Demon, or Dragon creature card from your hand onto the battlefield ta...

Haste Whenever Laelia, the Blade Reforged attacks, exile the top card of your library. You may play that card this turn. Whenever one or more cards...

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Choose one — • De...