Guile + Temporal Extortion + Professor Onyx

Prerequisites

• Your life total is at least 2.

Steps

1. 1Cast Temporal Extortion by paying .
2. 2Temporal Extortion and Professor Onyx trigger.
3. 3Resolve the Temporal Extortion trigger, causing you to pay half your life total, rounded up, and then exile Temporal Extortion and cast it without paying its mana cost due to Guile.
4. 4Repeat from step 2 until your life total is four or less.
5. 5Temporal Extortion and Professor Onyx trigger.
6. 6Resolve the Professor Onyx trigger, causing you to gain two life and each opponent to lose 2 life.
7. 7Resolve the Temporal Extortion trigger, causing you to pay half your life total, rounded up, and then exile Temporal Extortion and cast it without paying its mana cost due to Guile.
8. 8Repeat from step 5.

Effects

• Infinite lifegain triggers
• Infinite lifeloss
• Infinite magecraft triggers
• Infinite storm count