digimon card meta First Time Player: Should I buy a Starter Deck or a deck instead? TOP 10+ META DECKS!!! AD01

This card helps set up your Kyurem/Keldeo plan to start 1HKO-ing like crazy

Other sacrifice outlets include spells that require sacrificing creatures as one of their costs (Deadly Dispute should be the first card in any sacrifice deck), as well as cards with an enters ability that cares about sacrificing like God-Eternal Bontu

the same price for one real one

If you control a face-up Field Spell, you can Special Summon this card from your Graveyard

The characteristics of the door that wasn't cast are still ignored while the copy is on the stack, and when the copy resolves, the token it becomes will enter with the appropriate door unlocked