Sapseep Shoal enters the battlefield tapped unless you control an enchantment.
When Sapseep Shoal enters the battlefield, put a land you control on the bottom of its owner's library.
: Add 
to your mana pool.

: Sapseep Shoal becomes a 2/2 green and blue Treefolk Squirrel creature with trample until end of turn. It's still a land.