At the beginning of your end step, if you didn't cast any spells this turn, Dragonskull Encampment deals 1 damage to you.
When Dragonskull Encampment enters the battlefield, put a land you control on the bottom of its owner's library.
: Add 
to your mana pool.
: Dragonskull Encampment becomes a 2/2 black Rat Horror creature until end of turn. It's still a land.