Iara, Mother of the Waters

Islandwalker, Hexproof.
When Iara enters the battlefield, draw two cards.
{u}: target land becomes an island until its next
turn.
{1}{u}: Other creatures you control get +1/+0 and
Islandwalker until end of turn.
Humans kill my subjects, so I'll take their breath away, even if I drag them with the tides.