Himeka, Ruby Sea Oracle

Landfall—Whenever a land enters the battlefield under your control, Scry {1}. If it's a land, you may place it on the battlefield tapped.

{2}{g/u}: Target land becomes a 3/3 Water Elemental Creature. It's still a land.

{g}{u},{t}: Place X +1/+1 counters on target creature where X is the number of Water Elementals you control.