Marjhan

Marjhan doesn't untap during your untap step.
{u}{u}, Sacrifice a creature: Untap Marjhan.
Activate this ability only during your upkeep.
Marjhan can't attack unless defending player
controls an Island.
{u}{u}: Marjhan gets -1/-0 until end of turn and
deals 1 damage to target attacking creature
without flying.
When you control no Islands, sacrifice
Marjhan.