Elemental Mastery, Cryptolith Rite, and Morphling

Prerequisites

• Elemental Mastery on the battlefield
• Cryptolith Rite on the battlefield
• Morphling on the battlefield
• Elemental Mastery attached to Morphling
• Morphling does not have summoning sickness

Steps

1. Activate Morphling by tapping it, creating three 1/1 Elemental creature tokens with haste
2. Activate an Elemental token by tapping it, adding
3. Activate Morphling's first ability by paying , untapping it
4. Repeat

Results

• Infinite colored mana
• Infinite creature tokens with haste
• Infinite ETB