Nameless Wanderer

Ward {4}
{t}: Untap target attacking creature, that creature is
no longer attacking.

At the end of each of your turns if you dealt no
damage to any player, didn't attack with any
creature, and took no combat damage since your last
turn you gain 1 persuasion counter. (If you have 10 persuasion counters at the end of your turn, you win
the game.)