Lorwyn

When Giant Harbinger enters the battlefield, you may search your library for a Giant card, reveal it, then shuffle and put that card on top.

Flying When Thieving Sprite enters the battlefield, target player reveals X cards from their hand, where X is the number of Faeries you control. Yo...

Changeling (This card is every creature type.) Champion a creature (When this enters the battlefield, sacrifice it unless you exile another creatur...

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) {1}{W}: Target Merfolk you control gains protection fr...

Whenever you cast an Elf spell, you may create a 1/1 green Elf Warrior creature token.

{T}: Put a +1/+1 counter on target creature for each Elf you control.

Whenever another creature enters the battlefield, you may put X +1/+1 counters on Hamletback Goliath, where X is that creature's power.

Whenever you cast a Treefolk spell, you may have target creature get +3/-3 until end of turn.

Flash Flying When Spellstutter Sprite enters the battlefield, counter target spell with converted mana cost X or less, where X is the number of Fae...

Changeling (This card is every creature type.) {2}{U}: Target Shapeshifter becomes a copy of target creature until your next turn.

Vigilance, trample

Haste When Glarewielder enters the battlefield, up to two target creatures can't block this turn. Evoke {1}{R} (You may cast this spell for its e...

Changeling (This card is every creature type.) {1}{B}: Ghostly Changeling gets +1/+1 until end of turn.

Champion a Merfolk (When this enters the battlefield, sacrifice it unless you exile another Merfolk you control. When this leaves the battlefield, ...

{T}: Target land becomes the basic land type of your choice until end of turn. Activate only during your turn.

{T}: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island...

At the beginning of your upkeep, you may have target opponent discard a card at random. Whenever an opponent discards a card, you may create a 1/1 ...

Whenever Surgespanner becomes tapped, you may pay {1}{U}. If you do, return target permanent to its owner's hand.

Whenever Fallowsage becomes tapped, you may draw a card.

When Flamekin Harbinger enters the battlefield, you may search your library for an Elemental card, reveal it, then shuffle and put that card on top.

Trample Champion an Elemental (When this enters the battlefield, sacrifice it unless you exile another Elemental you control. When this leaves the ...

Flying When Ringskipper dies, clash with an opponent. If you win, return Ringskipper to its owner's hand. (Each clashing player reveals the top ca...

{R}, Sacrifice Boggart Forager: Target player shuffles their library.

Other Merfolk creatures you control get +1/+1. Whenever you cast a Merfolk spell, you may tap or untap target permanent.