Duergar Mine-Captain + Nyxbloom Ancient + Cryptolith Rite

Prerequisites

• Duergar Mine-Captain does not have summoning sickness.

Steps

1. 1Declare Duergar Mine-Captain as an attacker.
2. 2Activate Duergar Mine-Captain by paying and untapping it, causing all attacking creatures to gain +1/+0 until end of turn.
3. 3Activate Duergar Mine-Captain by tapping it, adding three mana of or .
4. 4Repeat from step 2.

Effects

• Infinite colored mana that can only be spent during combat phase
• Infinitely large creature