Nimble Trapfinder’s second ability affects only creatures you control at the time it resolves. Creatures you begin to control later in the turn won’t get the triggered ability.
Nimble Trapfinder
If a creature has more than one party creature type, and there are multiple ways to count that creature that could result in a different number of creatures in your party, the highest such number is used. For example, if you control a Cleric and a Cleric Wizard, the number of creatures in your party is two. You can’t choose to have it be just one by counting the Cleric Wizard first as a Cleric.
Some cards refer to you having a “full party.” This is true if the number of creatures in your party is four.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Caio Monteiro
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
