LeBlanc, the Deceiver

Whenever Delina, Wild Mage attacks, choose
target creature you control, then roll a d20.
1—14 | Create a tapped and attacking token that's
a copy of that creature, except it's not legendary
and it has "At end of combat, exile this creature."
15—20 | Create one of those tokens.
You may roll again.
"Classic misdirection."