(: Add or to your mana pool.)
When Sea Thicket enters the battlefield, return a land you control to its owner's hand.
: Sea Thicket becomes a 2/1 blue and green Merfolk creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.): Sea Thicket becomes a 2/1 blue and green Merfolk creature until end of turn. It's still a land.
