At the beginning of your end step, if you didn't cast any spells this turn, Leechridden Cradle deals 1 damage to you.
When Leechridden Cradle enters the battlefield, put a land you control on the bottom of its owner's library.
: Add 
to your mana pool.
, Sacrifice Leechridden Cradle: Target creature gets +2/+2 until end of turn.