At the beginning of your upkeep, you may put a charge counter on Æther Vial.
: You may put a creature card with converted mana cost equal to the number of charge counters on Æther Vial from your hand onto the battlefield.

: Add to your mana pool.
, Sacrifice Wasteland: Destroy target nonbasic land.

You may pay 1 life and exile a blue card from your hand rather than pay Force of Will's mana cost.
Counter target spell.

You may return an Island you control to its owner's hand rather than pay Daze's mana cost.
Counter target spell unless its controller pays .

As an additional cost to cast Silvergill Adept, reveal a Merfolk card from your hand or pay .
When Silvergill Adept enters the battlefield, draw a card.

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

Other Merfolk creatures get +1/+1 and have islandwalk.

Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays .

Level up
LEVEL 2-3|Flying|3/3
LEVEL 4+|Flying
Other merfolk creatures you control gets +1/+1|4/4

: Add to your mana pool.
: Mutavault becomes a 2/2 creature with all creature types until end of turn. It's still a land.

Other Merfolk creatures you control get +1/+1.
: Target Merfolk creature is unblockable this turn.

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

( can be paid with either or 2 life.)
Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles his or her library.

( can be paid with either or 2 life.)
Target creature gets -5/-5 until end of turn.

Counter target noncreature spell unless its controller pays .

If an opponent controls a Forest and you control an Island, you may cast Submerge without paying its mana cost.
Put target creature on top of its owner's library.

: Target player exiles a card from his or her graveyard.
, Exile Relic of Progenitus: Exile all cards from all graveyards. Draw a card.

Return all green permanents to their owners' hands.

As Pithing Needle enters the battlefield, name a card.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.