Horseshoe Crab + Mairsil, the Pretender + Nyx Lotus + Quicksilver Elemental

UBR identity

Commander legal

The 4 combo pieces

• Horseshoe Crab
• Mairsil, the Pretender
• Nyx Lotus
• Quicksilver Elemental

What must be in place

Mairsil does not have summoning sickness.
Your devotion to blue is at least three.

How to execute it

1. Activate Mairsil using Nyx Lotus' ability by tapping it, adding at least {U}{U}{U}.
2. Activate Mairsil using Horseshoe Crab's ability by paying {U}, untapping it.
3. Activate Mairsil using Quicksilver Elemental's ability by paying {U}, causing it to gain all activated abilities of itself until end of turn.
4. Repeat.

What the combo produces

• Infinite mana among colors with which you have devotion