wotc
The target creature doesn't have to be an Elf.
The target creature doesn't have to be an Elf.
The number of counters to put on the target creature is determined only as Immaculate Magistrate's ability resolves. Elves coming and going later won't cause that creature to gain or lose +1/+1 counters.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Jim Nelson
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.