Yam, Tormandi's Mentor

Undying
When Yam, Tormandi's Mentor enters the battlefield, put a 1/1 White Soldier token with vigilance onto the battlefield.
When Yam, Tormandi's Mentor leaves the battlefield, put a 2/2 Black Knight token with double strike onto the battlefield.
"You forgot, didn't you? -Yam Taresi