Hatchling of the Water

({t}: Add {u})
This creature gets +1/+0 for each Island you control.
Trample, haste, first strike, hexproof
{x}{u}: Put X +1/+1 counters on target Island. Gain control of that Island. It becomes a 0/0 blue
Elemental creature with haste and vigilance.
It's still a land.
At the beginning of your upkeep, you gain 1 life.
You know you're in trouble when the water takes shape.