Leviathan{5}{U}{U}{U}{U}
Creature — Leviathan
Trample
Leviathan enters tapped and doesn't untap during your untap step.
At the beginning of your upkeep, you may sacrifice two Islands. If you do, untap Leviathan.
Leviathan can't attack unless you sacrifice two Islands. (This cost is paid as attackers are declared.)
10/10
Artist: Mark Tedin