Opposition

Tap an untapped creature you control: Tap target artifact, creature, or land.

Island

Mana Maze

Players can't cast spells that share a color with the spell most recently cast this turn.

Vodalian Merchant

When Vodalian Merchant enters, draw a card, then discard a card.

Lord of Atlantis

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Hibernation

Return all green permanents to their owners' hands.

Teferi's Response

Counter target spell or ability an opponent controls that targets a land you control. If a permanent's ability is countered this way, destroy that permanent.
Draw two cards.

Merfolk Looter

Waterfront Bouncer

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

Merfolk of the Pearl Trident

Gush

You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Draw two cards.

Misdirection

You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

Rushing River

Kicker—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, return another target nonland permanent to its owner's hand.

Static Orb

As long as Static Orb is untapped, players can't untap more than two permanents during their untap steps.

Counterspell

Alex Borteh Bio

Eighteen-year-old Alex Borteh came on strong in the last half of the 2000—2001 Pro Tour™ season. He posted an impressive Top 8 finish at U.S. Nationals and followed that up by coming within one match of winning this year's Worlds. The soon-to-be Ohio State University freshman played a monoblue combo deck that he liked to call "Da Folk." This deck wins by using Opposition and Static Orb to establish a lock down while legions of Merfolk overrun opponents' immobilized defenses.

Thwart

You may return three Islands you control to their owner's hand rather than pay this spell's mana cost.
Counter target spell.