Poliwrath

You may sacrifice a creature named Poliwhirl and pay {u} rather than pay this spells mana cost.
Protection from monocolored-blue.
Absorb 1.
Poliwrath has first strike and trample as long as
the defending player this turn controls an Island. {1}: Poliwrath gets +3/-3 until end of turn.
Whenever a creature is dealt damage by Poliwrath, detain that creature. (Until your next
turn, that permanent can't attack or block and its activated abilities can't be ac