{T}: Draw a card, then discard a card. If you discarded an instant or sorcery card this way, each opponent loses 1 life and you gain 1 life.

{2}, Sacrifice Vohar, Vodalian Desecrator: You may cast target instant or sorcery card from your graveyard this turn. If that spell would be put into your graveyard, exile it instead. Activate only as a sorcery.

{T}: Add {U}. Spend this mana only to cast an instant or sorcery spell or a kicked spell.

{G}{U}, {T}: Double the number of each kind of counter on target artifact, creature, or land.

{X}{G}{G}: Put X +1/+1 counters on target land you control. That land becomes a 0/0 Elemental creature with haste. It’s still a land.

Whenever a permanent you control becomes untapped, Wake Thrasher gets +1/+1 until end of turn.

Wanderbrine Rootcutters can’t be blocked by green creatures.

Champion a Merfolk (When this enters, sacrifice it unless you exile another Merfolk you control. When this leaves the battlefield, that card returns to the battlefield.)

Whenever Wanderwine Prophets deals combat damage to a player, you may sacrifice a Merfolk. If you do, take an extra turn after this one.

{U}, {T}, Discard a card: Return target creature to its owner’s hand.

Kinship — At the beginning of your upkeep, you may look at the top card of your library. If it shares a creature type with Waterspout Weavers, you may reveal it. If you do, each creature you control gains flying until end of turn.

When Watertrap Weaver enters, tap target creature an opponent controls. That creature doesn’t untap during its controller’s next untap step.

Flying

When Waterwind Scout enters, create a Map token. (It’s an artifact with “{1}, {T}, Sacrifice this artifact: Target creature you control explores. Activate only as a sorcery.”)

Heroic — Whenever you cast a spell that targets Wavecrash Triton, tap target creature an opponent controls. That creature doesn’t untap during its controller’s next untap step.

{1}{W}: Prevent all damage that would be dealt to target tapped Merfolk or Kithkin creature this turn.

When Whirlpool Rider enters, shuffle the cards from your hand into your library, then draw that many cards.

When Whirlpool Warrior enters, shuffle the cards from your hand into your library, then draw that many cards.

{R}, Sacrifice Whirlpool Warrior: Each player shuffles the cards from their hand into their library, then draws that many cards.

{T}: Target red or green creature gets -2/-0 until end of turn.

Flying

Whenever Windrider Patrol deals combat damage to a player, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Flash

Flying

Defender

{1}{U}: Wishful Merfolk loses defender and becomes a Human until end of turn.

When Wistful Selkie enters, draw a card.