Eve, Disciple of the Unbound

Convoke

Deathtouch, ward—Discard a card.

Whenever a commander you control deals combat damage to a player, you may create Withengar, a legendary 13/13 black Demon creature token with flying, intimidate, trample and, "Whenever a player loses the game, put thirteen +1/+1 counters
on Withengar."