Teysa, Orzhov Scion (EDH / Commander)

Teysa + Reveillark + Karmic Guide = Infinite Teysa first ability and infinite creatures leaving/entering the battlefield triggers. (blood artist etc)

Teysa + Reveillark + Karmic Guide + any black creature power 2 or less + sac outlet = infinite sac outlet and infinite spirit tokens

2 creatures power 2 or less + Reveillark + Nim Deathmantle + Ashnod's Altar = sac creatures for 4 mana to altar , sac Reveillark for 2 mana to altar, bring back Lark with deathmantle and the other two creatures with reveillark, this makes infinite cololess mana and infnite enter/leave play triggers. with teysa out it makes infinite spirit tokens Because the deathmantle turns the equiped black. of course this works when the other two creatures are black. if you have necrotic sliver you can use that to blow up the board

Phyrexian Reclamation + Endrek Sahr, Master Breeder = recast creatures from your hand to trigger Endrek multiple times

Nim Deathmantle + Teysa + Ashnod's Altar = infinitely recur and creature abusing there ETB/LTB effect. requires an initial 4 if the creature is white. then the mantle will make the creature black upon equipping. sac the creature to the altar. then sac the token you get from teysa for 4colorless mana. use that mana to bring the creature back equipped to the mantle. try on a marsh flitterwith blood artist out

Blood Artist + Vizkopa Guildmage + Falkenrath Noble = lightning bolt a single opponent and shock everyone else when creatures die (activate guildmages 2nd ability multiple times for increased magnitude.

Vizkopa Guildmage + Soul Warden = Each player loses a life when a creature enters your field. this is much easier to duplicate multiple times for the win then with blood artist. although the effect doubles when artist is out.

Nether Traitor + Phyrexian Altar + Teysa = Infinite mana

Reassembling Skeleton + Phyrexian Altar + Teysa = creates enough mana to infinitely sacrifice and reassemble the Skeleton (feeding etb/ltb triggers)

Reassembling Skeleton + Mentor of the Meek + Ashnod's Altar = Repeatable card draw for B (add Teysa to gain +1 Spirit ETB everytime)

Reassembling Skeleton + Mentor of the Meek + Phyrexian Altar = Repeatable card draw for B1 (add Teysa to gain +1 Spirit ETB everytime)

Any of the above 3 + Cathars' Crusade = grow the rest of your creatures bigger ( add Teysa to the field for 2x effect)

Any of the above 3 + Pawn of Ulamog/Requim Angel/Ogre Slumlord/Teysa = nets 1 token each time they die.play multiple token producers for more tokens

Carnival of Souls + Suture Priest = free black mana everytime a creature enters your field. helps negate life loss

Carnival of Souls + Zombie Infestation + Skullclamp + Teysa + free sac outlet = this can almost infinitely go through your deck triggering any etb/ltb effects and w/e the sac outlet is up to how many cards you have left . if you need life better have suture priest, blood artist etc out

Vizkopia Guildmage + Plunge into Darkness = amass a medicore amount of tokens and sac them all for 3 life each while bolting your opponents while you tutor. you lose life from plunge's second ability if you so choose to entwine but gain 3 fold back from Guildmage. stack Guildmage ability multiple times for cheap damage.

Vizkopa Guildmage + Extort Ability's = massively amplify drain damage the more players there are

Spawning pit + Teysa = sacing a black creature then the white spirit you get from it will make spawning pit say " pay 1 put a 2/2 token into play. add in requiem angel for an additional spirit