How it works
Prerequisites
- You control at least one additional creature.
Steps
- 1Cast Rancor by paying , attaching it to any other creature you control.
- 2Siona triggers, creating a 1/1 Human Soldier creature token.
- 3Activate Phyrexian Altar by sacrificing the creature with Rancor attached, adding .
- 4Rancor triggers, returning itself from the battlefield to your hand.
- 5Repeat.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?