Jedit Ojanen, Mercenary + Leyline of Singularity + Phyrexian Altar

Prerequisites

• You have a way to cause a creature to enter the battlefield under your control.

Steps

1. 1Cause a creature to enter the battlefield under your control, which will be legendary due to Leyline of Singularity.
2. 2Jedit triggers, causing you to pay to create a 2/2 Cat Warrior creature token that is legendary due to Leyline of Singularity.
3. 3The Cat Warrior enters the battlefield, triggering Jedit.
4. 4Holding priority, activate Phyrexian Altar by sacrificing the Cat Warrior, adding .
5. 5Resolve the Jedit trigger, causing you to pay to create a 2/2 Cat Warrior creature token that is legendary due to Leyline of Singularity.
6. 6Repeat from step 3.

Effects

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