Mikaeus, the Unhallowed + Canker Abomination + Phyrexian Altar

Prerequisites

• An opponent controls a creature.

Steps

1. 1Activate Phyrexian Altar by sacrificing Canker Abomination, adding one mana of any color.
2. 2When Canker Abomination dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. 3When Canker Abomination enters the battlefield, it triggers, putting a number of -1/-1 counters on it equal to the number of creatures an opponent controls.
4. 4If the opponent had seven or more creatures, Canker Abomination will die as a state-based action due to having 0 or less toughness. If this occurs, repeat steps 2 through 4 infinitely.
5. 5Otherwise, repeat from step 1.

Effects

• Infinite colored mana
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers