Infinite death triggers, Infinite ETB, Infinite LTB, Infinite mana creatures you control can produce, Infinite proliferate, Infinite sacrifice triggers, Infinite untap of creatures, Infinite untap of creatures you control
Activate Saproling Burst by removing a fade counter from it, creating a */* Saproling creature token.
When the Saproling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Activate Xavier Sal's second ability by tapping it and sacrificing the Saproling, putting a fade counter on Saproling Burst.
Repeat.
Component Cards
How It Works
Activate Saproling Burst by removing a fade counter from it, creating a */* Saproling creature token.
When the Saproling enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Activate Xavier Sal's second ability by tapping it and sacrificing the Saproling, putting a fade counter on Saproling Burst.
Repeat.