Horseshoe Crab + Magistrate's Scepter + Mairsil, the Pretender + Ventifact Bottle

Mana needed: {4}{U} each turn

UBR identity

Commander legal

The 4 combo pieces

What must be in place

Mairsil does not have summoning sickness.

How to execute it

  1. Activate Mairsil using Ventifact Bottle's ability by paying {4} and tapping it, putting three +1/+1 counters on Mairsil.
  2. Activate Mairsil using Horseshoe Crab's ability by paying {U}, untapping itself.
  3. Activate Mairsil using Magistrate's Scepter's last ability by tapping it, gaining an extra turn after this one.
  4. Move to your next turn.
  5. Repeat.

What the combo produces