Exsanguinator Cavalry + Time Sieve

UB identity

Commander legal

The 2 combo pieces

What must be in place

You control at least five Knights that do not have summoning sickness and that cannot be blocked by an opponent.

How to execute it

  1. Deal combat damage using at least five Knights.
  2. Exsanguinator Cavalry triggers, putting a +1/+1 counter on each attacking Knight and creating that many Blood artifact tokens.
  3. Activate Time Sieve by tapping it and sacrificing five Bloods, causing you to take an extra turn after this one.
  4. Repeat.

What the combo produces