Nightmare Shepherd [Theros Beyond Death] Basic Grass Energy You can only use this

You can only use this effect of "Token Collector" once per turn

The cards which are already on the field before this card''s activation are excluded

or if this card in its owner's possession is destroyed by an opponent's card effect: You can target 1 of your banished monsters

When Thornscape Battlemage enters the battlefield

Nightmare Shepherd [Theros Beyond Death] Basic Grass Energy You can only use thisSet: Theros Beyond Death Type: Enchantment Creature Demon Rarity: Rare Cost: {2}{B}{B} Flying Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1 1 and it's a Nightmare in addition to its other types.