Since it deals damage, All Will Be One can go infinite with cards like The Red Terror and Night Dealings, as they get a counter whenever damage is dealt to a player or permanent, which will then cause All Will Be One to trigger again, creating a loop that can do infinite damage
For one, that system meant a lot of different lists you have to check against, which made it onerous
1 Non-foil extended-art new-to- Magic card 1 Non-foil extended-art reprint Magic card 1 Traditional foil extended-art new-to- Magic card 1 Traditional foil extended-art reprint Magic card 1 Surge foil extended-art new-to- Magic card 1 Surge foil extended-art reprint Magic card 1 Surge foil wildcard Cannot be a showcase Pip-Boy variant, borderless Vault Boy, or basic land card
Yeah, this card is the real deal
This includes permanents that became creatures after you gained control of them