Mikaeus, the Unhallowed + Phyrexian Altar + Pith Driller

Prerequisites

• Pith Driller does not have a +1/+1 counter on it.

Steps

1. 1Activate Phyrexian Altar by sacrifiicing Pith Driller, adding one mana of any color.
2. 2When Pith Driller dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. 3When Pith Driller enters the battlefield, it triggers, putting a -1/-1 counter on it.
4. 4Repeat.

Effects

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