Reverberate + Rootha, Mercurial Artist

Mana needed: {2}{R}{R}

UR identity

Commander legal

The 2 combo pieces

• Reverberate
• Rootha, Mercurial Artist

How to execute it

1. Cast an instant or sorcery spell, or wait for an opponent to cast one.
2. Holding priority, cast Reverberate by paying {R}{R}, targeting the spell.
3. Activate Rootha by paying {2} and returning it to your hand, copying Reverberate, with the copy targeting the original Reverberate.
4. Resolve the copy of Reverberate, copying Reverberate, targeting the original Reverberate.
5. Repeat step 4.

What the combo produces

• Infinite magecraft triggers