This combo generates infinite:
- Mana (any color your nonland mana sources can produce)
- Cast triggers
- Tap and untaps.
Note: This combo requires one or more nonland permanent(s) that taps for 3+ mana
Steps:
- Play Echo Mage and exile Dramatic Reversal.
- Tap any nonland mana source(s) to produce 3 or more mana.
- Pay 2 of that mana to tap Echo Mage and cast the copy of Dramatic Reversal.
- When Dramatic Reversal is cast, untap Echo Mage and your nonland mana sources.
- Repeat steps 2 to 4.