Astral Dragon + Swift Reconfiguration + Strionic Resonator

Prerequisites

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Steps

1. 1Cast Astral Dragon by paying .
2. 2When Astral Dragon enters the battlefield, its ability triggers.
3. 3Holding priority, cast Swift Reconfiguration by paying , attaching it to Astral Dragon and causing Astral Dragon to become a Vehicle artifact with no other card types.
4. 4Activate Strionic Resonator by paying and tapping it, copying Astral Dragon's trigger from step 2, targeting Astral Dragon.
5. 5Resolve the copy of Astral Dragon's ability, creating two token copies of Astral Dragon that are 3/3 Dragons in addition to their other types.
6. 6When the Astral Dragon tokens enter the battlefield, their abilities trigger, targeting the nontoken Astral Dragon.
7. 7Resolve the first Astral Dragon token's trigger, creating two token copies of Astral Dragon that are 3/3 Dragons in addition to their other types.
8. 8Repeat from step 6.

Effects

• Infinite copies of noncreature permanents you control
• Infinite creature ETB
• Infinite creature tokens