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Counter target spell unless its controller pays {1}. Cycling {2} ({2}, Discard this card: Draw a card.)

Return target exiled card with flashback you own to your hand.

At the beginning of your end step, untap all Merfolk you control.

Whenever River Kelpie or another permanent enters the battlefield from a graveyard, draw a card. Whenever a player casts a spell from a graveyard,...

Kicker {1} (You may pay an additional {1} as you cast this spell.) When Tide Shaper enters the battlefield, if it was kicked, target land becomes a...

All Sliver creatures have "{T}: This creature deals 2 damage to any target and 3 damage to itself."

Enchant creature Enchanted creature doesn't untap during its controller's untap step. {3}{U}: Attach Stasis Cell to target creature.

{T}: Each player draws a card, then discards a card.

Tidewalker enters the battlefield with a time counter on it for each Island you control. Vanishing (At the beginning of your upkeep, remove a time...

Level up {2} ({2}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-4 0/6 LEVEL 5+ 6/6 Islandwalk (This creature can't be blo...

Draw a card for each Human you control.

Flash Flying When Draining Whelk enters the battlefield, counter target spell. Put X +1/+1 counters on Draining Whelk, where X is that spell's ma...

Counter target creature spell. Create a 2/2 blue Illusion creature token.

[+2]: Each player draws a card. [-1]: Target player draws a card. [-10]: Target player mills twenty cards.

Shadow (This creature can block or be blocked by only creatures with shadow.) Suspend 2—{1}{U} (Rather than cast this card from your hand, you may ...

Target player mills X cards, where X is the number of lands you control.

Level up {2}{U} ({2}{U}: Put a level counter on this. Level up only as a sorcery.) LEVEL 1-2 2/2 Hada Spy Patrol can't be blocked. LEVEL 3+ 3/...

You may pay {0} rather than pay the mana cost for Zombie creature spells you cast.

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) Whenever Merfolk Spy deals combat damage to a player, ...

Flying When Phantasmal Dragon becomes the target of a spell or ability, sacrifice it.

{2}{U}, Discard a card: Counter target spell if it has the same mana value as the discarded card.

Affinity for artifacts Flying When Thought Monitor enters the battlefield, draw two cards.

Flying When Illusionary Servant becomes the target of a spell or ability, sacrifice it.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Enchant permanen...