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'Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, you may search your library for a Merfolk card, reveal it, then...
'When this creature enters, you may search your library for an Elemental card, reveal it, then shuffle and put that card on top.
'Flying, deathtouch
Whenever you gain or lose life during your turn, Bats you control get +1/+0 and gain deathtouch until end of turn. This ability triggers only once each turn.
'Flying Lifelink (Damage dealt by this creature also causes you to gain that much life.) At the beginning of each end step, if you gained 4 or more life this...
'Boast — {1}{W}: Untap this creature. Put a +1/+1 counter on it. (Activate only if this creature attacked this turn and only once each turn.)
'Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
'[+2]: You may discard a card. If you do, draw a card. [−2]: Exile target enchantment, tapped artifact, or tapped creature. [−8]: Search your library for an artifact or creature...
'Islandwalk (This creature can't be blocked as long as defending player controls an Island.) When this creature enters, you may search your library for a Merfolk card, reveal it, then...
'When this creature enters, you may search your library for an Elf card, reveal it, then shuffle and put that card on top.
{T}: Add one mana of any color.
'{B}, {T}, Discard a card: Add {B}{B}{B}.
'[+2]: You may discard a card. If you do, draw a card. [−2]: Exile target enchantment, tapped artifact, or tapped creature. [−8]: Search your library for an artifact or creature...
'Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)