Cryptolith Rite + Horseshoe Crab + Leyline of Abundance

GU identity

Commander legal

The 3 combo pieces

• Cryptolith Rite
• Horseshoe Crab
• Leyline of Abundance

What must be in place

Horseshow Crab does not have summoning sickness.

How to execute it

1. Activate Horseshoe Crab's ability from Cryptolith Rites by tapping it, adding {U}.
2. Leyline of Abundance's second ability triggers, adding {G}.
3. Activate Horseshoe Crab's own ability by paying {U}, untapping it.
4. Repeat any number of times.
5. Once you have infinite green mana, you may activate Leyline of Abundance's last ability any number of times.

What the combo produces

• Infinite +1/+1 counters on creatures you control
• Infinite green mana