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Create a 0/3 blue Crab creature token. Investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

Flying {2}{U}: Another target creature gains flying until end of turn. Channel — {X}{U}, Discard Ghost-Lit Drifter: X target creatures gain flying ...

Lifelink Modular 1 (This creature enters the battlefield with a +1/+1 counter on it. When it dies, you may put its +1/+1 counters on target artifac...

Whenever a player casts a spell, if no colored mana was spent to cast it, counter that spell.

Flying When Foul Watcher enters the battlefield, surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) Deli...

Discard a card: Regenerate Patchwork Gnomes. (The next time this creature would be destroyed, instead tap it, remove it from combat, and heal all d...

{T}, Mill a card: Add {C}. (To mill a card, put the top card of your library into your graveyard.)

Monoskelion enters the battlefield with a +1/+1 counter on it. {1}, Remove a +1/+1 counter from Monoskelion: It deals 1 damage to any target.

Echo {4} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its...

{2}, {T}, Sacrifice Brainstone: Draw three cards, then put two cards from your hand on top of your library in any order.

Activated abilities of creatures can't be activated.

Destroy target creature. Madness {B}{R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into ...

{3}, {T}: Investigate. (Create a colorless Clue artifact token with "{2}, Sacrifice this artifact: Draw a card.")

When Yavimaya Elder dies, you may search your library for up to two basic land cards, reveal them, put them into your hand, then shuffle. {2}, Sacr...

Create a 4/4 green Beast creature token. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

If an opponent controls an Island and you control a Mountain, you may cast this spell without paying its mana cost. Destroy target artifact.

Sacrifice a token: Glimmer Bairn gets +2/+2 until end of turn.

Create a 1/1 green Squirrel creature token. Storm (When you cast this spell, copy it for each spell cast before it this turn.)

Flying Filigree Attendant's power is equal to the number of artifacts you control.

If it's your turn, you may sacrifice a Mountain rather than pay this spell's mana cost. Mine Collapse deals 5 damage to target creature or planesw...

Exile target creature card from your graveyard. Create X 1/1 white Bird creature tokens with flying, where X is the exiled card's toughness.

Exile the top card of your library. During your next turn, you may play that card. Storm (When you cast this spell, copy it for each spell cast bef...

{R}: Blazing Rootwalla gets +2/+0 until end of turn. Activate only once each turn. Madness {0} (If you discard this card, discard it into exile. Wh...

Whenever you cast a spell with mana value 4 or greater, create a 1/1 colorless Thopter artifact creature token with flying.