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From $4.50
'As this land enters, you may reveal a Merfolk card from your hand. If you don't, this land enters tapped.
{T}: Add {W} or {U}.
From $0.75
'Vigilance This creature can't be blocked by creatures with power 2 or greater. Whenever this creature attacks, up to one target artifact, creature, or planeswalker an opponent controls loses all...
From $17.25
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
From $4.50
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
From $5.50
'Counter target instant or sorcery spell unless its controller pays {3}.
From $5.50
'Flash
Other Merfolk you control get +1/+1.
Sacrifice a Merfolk: Counter target noncreature spell unless its controller pays {1}.
From $1.25
Character - Storyborn, Mentor, Sorcerer Ink: Amethyst Cost: 4 Strength: 2 Willpower: 3 Lore: 1 Hoppity Hip!: When you play this character and when he leaves play, you may draw...
From $16.25
'Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.
From $52.50
'{T}, Pay 1 life, Sacrifice this land: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.
From $7.25
'Flash
Other Merfolk you control get +1/+1.
Sacrifice a Merfolk: Counter target noncreature spell unless its controller pays {1}.
From $21.00
'Whenever a permanent becomes untapped, that permanent's controller mills a card.