MTG > Combos > Altar of Dementia +Lesser Masticore +Grumgully, the Generous +

Sacrifice Lesser Mantice with Altar of Dementia to make the opponent mill two cards Lesser Manticore's ability will trigger, returning it to play with a -1/-1 counter Grumgully's ability will trigger, put a +1/+1 counter on Lesser Manticore +1/+1 and -1/-1 counters cancel each other out Repeat process for infinite mill