Isther, Night's Edge

: Whenever a permanent enters the battlefield, if that permanent has an ability that can transform it into a creature, it transforms.
+1: Turn target nontransformed creature face down. While that creature is face down, it's a 3/3 black Beast with a morph cost equal to its mana cost.
-6: You get an emblem with "Whenever a permanent you control transforms, you may put a creature card from your hand onto the battlefield."