Berta, Wise Extrapolator + Intruder Alarm
Produces: Infinite creature ETB, Infinite creature LTB, Infinite creature tokens, Infinite death triggers, Infinite mana creatures you control can produce, Infinite untap of creatures you control
- Berta, Wise Extrapolator
- Intruder Alarm
- Color identity
- GU
Prerequisites
Berta doesn't have summoning sickness.
Steps
- Activate Berta by paying {0} and tapping it, creating a 0/0 Fractal creature token.
- The Fractal enters and dies as a state-based action due to having 0 toughness.
- Intruder Alarm triggers, untapping all creatures.
- Repeat.
How to execute this combo
The "Berta, Wise Extrapolator + Intruder Alarm" combo takes 4 steps in order. Make sure you have the mana open and permanents listed in the prerequisites before you start — opponents can respond between steps.
The end result: Infinite creature ETB, Infinite creature LTB, Infinite creature tokens, Infinite death triggers, Infinite mana creatures you control can produce, Infinite untap of creatures you control.
Practice the line offline: lay out the cards, walk through each step, and note where you can lose the combo (summoning sickness, lack of priority, removal on a key permanent). In game, announce each step clearly; in casual play you can offer to shortcut after demonstrating the loop.
The best window is a turn when opponents are tapped out or after they commit a spell — hold protection (a counter, Vexing Shusher) if the combo wins on the spot.