Facilier, Friend to Shadows

Friends on the other side—Whenever a non token creature enters the battlefield under an
opponents control, they may have you create a
1/1 black shade creature token. If they don't,
target creature they control loses all abilities and becomes a green frog with base power and
toughness 1/1 until the end of your next turn.
Whenever a shade you control dies, return target
creature from your graveyard to the battlefield
tapped.