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'This creature gets +3/+0 as long as there are ten or more cards in a single graveyard.
This creature can't be blocked as long as you control an Ashiok planeswalker.
'Protection from red Elemental creatures you control get +1/+1. When this creature enters, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each {U}...
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
'Delirium — Whenever this creature attacks, if there are four or more card types among cards in your graveyard, look at the top card of your library. If it's a...
'This creature has flying as long as you control another Merfolk.
'Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)
'Put a flood counter on target land. That land is an Island in addition to its other types for as long as it has a flood counter on it. If...
'{T}: Draw a card, then discard a card.
'Delirium — Whenever this creature attacks, if there are four or more card types among cards in your graveyard, look at the top card of your library. If it's a...