Backslide + Brine Elemental + Isochron Scepter + Ixidor, Reality Sculptor

Mana needed: {4}{U} each turn

U identity

Commander legal

The 4 combo pieces

• Backslide
• Brine Elemental
• Isochron Scepter
• Ixidor, Reality Sculptor

How to execute it

1. Activate Isochron Scepter by paying {2} and tapping it, casting a copy of Backslide without paying its mana cost.
2. Resolve Backslide, turning Brine Elemental face down.
3. Activate Ixidor by paying {2}{U}, turning Brine Elemental face up.
4. Brine Elemental triggers, causing each opponent to skip their next untap step.
5. Repeat during each of your turns.

What the combo produces

• Lock
• Opponents skip their untap steps