Life counter with commander damage

Twenty-one combat damage from the same commander makes that player lose the game. The count is per commander, not a total: taking 15 from one commander and 12 from another does not eliminate you. That is why this tool keeps a separate counter for every pair of players instead of a single number.

Yes. Commander damage is normal combat damage that is also tracked separately, so it lowers your life total and fills the 21 point counter at the same time. Marking one and forgetting the other is the most common mistake in a hand written score, so this tool moves both together.

Ten poison counters lose the game, in any format. Infect and toxic deal damage as poison counters instead of life, which is why a player on 40 life can still be one attack away from losing.

Yes. Every change is saved in your browser, so rotating the phone, locking the screen or reloading by accident does not reset the table. Undo goes back through the last fifty changes, which covers the misplaced tap that always happens on a big button.