Swamp Stalker

Swampwalk.
Frenzy eyes - Whenever you sacrifice a creature
put an eye counter on an enemy creature, enemy creatures with three or more eye counters are swallowed by Swamp Stalker (This card swallows
target creature destroying it and gaining a +1/+1
counter.)
Something is dwelling in the dark, do not get caught by
it's eyes, do not walk near the swamp, do not throw
corpses in the swamp