Slurmi, the Eversticky

Bestow {1}{g}{u} (If you cast this card for its bestow
cost, it's an Aura spell with enchant creature. It
becomes a creature again if it's not attached to a
creature.)
Whenever a land card leaves your graveyard, proliferate. (Choose any number of permanents
and/or players, then give each another counter of
each kind already there.)
Whenever enchanted creature deals combat
damage to a player, proliferate, then proliferate
again.