Combos Utilizing Altar-of-Dementia

sac all of your creature to the alter then living death and do it again

Put Altar of Dementia in play. Declare Wall of Tears a blocker & cast Glyph of Destruction. Sac the wall to the altar & make opponent put 10 cards from his library into his graveyard.

Put Altar of Dementia in play. Declare Wall of Wonder a blocker & cast Glyph of Destruction. Sac the wall to the altar & make opponent put 11 cards from his library into his graveyard.

Put Altar of Dementia in play. Declare Wall of Wood a blocker & cast Glyph of Destruction. Sac the wall to the altar & make opponent put 10 cards from his library into his graveyard.

Play Tombstone stairwell, during opponents turn sac them all to mill yourself (use them to block first if necessary), during your own turn, attack and sac them = Tons of tokens in no time

sack creatures, and then sack again the next turn... and so on

have threshold. tap 2 lands cast cloud for u (untaping 2 lands). sac cloud to altar (opponent mills a card). use soil's ability-return cloud to hand with floated mana. repeat until opponent is decked

have threshold. tap 7 lands cast whale for 4uu(untaping 7 lands). sac whale to altar (opponent mills 5cards). use soil's ability-return whale to hand with floated mana. repeat until opponent is decked

cantivore, cognivore, magnivore. sack your vore cards and most likely they will get bigger for the next turn.

Earthquake any amount then bounce the damage back and forth between the en-Kor's (you can use all en-kor's) and the Angelic protector. Then About face the Angel, then sacrifice it to the Altar and put the entire opponents library in the graveyard.