Ashnod's Altar + Avacyn's Collar + Xenograft

U identity

Commander legal

The 3 combo pieces

What must be in place

Avacyn's Collar attached to any creature you control.
"Human" chosen with Xenograft.

How to execute it

  1. Activate Ashnod's Altar by sacrificing the creature with Avacyn's Collar attached, adding {C}{C}.
  2. When the creature dies, Avacyn's Collar triggers, creating a 1/1 Spirit creature token.
  3. Activate Avacyn's Collar's equip ability by paying {2}, attaching it to the Spirit token.
  4. Repeat.

What the combo produces