Displacer Kitten + Guile + Frilled Mystic

Prerequisites

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Steps

1. 1Cast any noncreature spell from your hand by paying its mana cost, or wait for an opponent to cast one.
2. 2Holding priority, cast Frilled Mystic by paying .
3. 3Frilled Mystic enters the battlefield, exiling the spell and causing you to cast the spell from exile without paying its mana cost due to Guile.
4. 4Displacer Kitten triggers, blinking Frilled Mystic.
5. 5Repeat from step 3.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite magecraft triggers
• Infinite storm count