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$3.25 – $4.50
'This spell can't be countered.
Haste, protection from blue
This creature enters with X +1/+1 counters on it.
$0.25 – $0.50
'Level up {1} ({1}: Put a level counter on this. Level up only as a sorcery.) LEVEL 2-3 3/3 Flying LEVEL 4+ 4/4 Flying Other Merfolk creatures you control get...
$0.25
As an additional cost to cast this spell, behold a Merfolk and exile it. (Exile a Merfolk you control or a Merfolk card from your hand.) Whenever this creature enters...
$2.00 – $5.00
'Whenever your opponents are dealt combat damage, if any of that damage was dealt by a Warrior, you draw a card and you lose 1 life.
$8.25 – $15.75
'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 this creature deals...
$11.00 – $14.25
'Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on...
$5.50 – $7.75
'Whenever a spell or ability you control counters a spell, you may create a 1/1 blue Merfolk creature token.
Tap seven untapped Merfolk you control: Counter target spell.
$0.25
'Flying When this creature enters, reveal the top three cards of your library. Put all Island cards revealed this way into your hand and the rest on the bottom of...
$5.25 – $6.50
'Flash
Other Merfolk you control get +1/+1.
Sacrifice a Merfolk: Counter target noncreature spell unless its controller pays {1}.
$0.25
Choose two — • Create a token that's a copy of target Merfolk you control. • Creatures target player controls gain lifelink until end of turn. • Target player draws...
$5.50 – $7.00
'Counter target instant or sorcery spell unless its controller pays {3}.
$7.25 – $12.75
'At the beginning of each player's upkeep, that player discards a card.