(If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.) When Grim Giganotosaurus becomes monstrous, destroy all artifacts and creatures other than Grim Giganotosaurus
Otherwise, there are dozens of powerful Elves in Arena that utilize +1/+1 counters, and Voja happily obliges
For Gandalf specifically, it helps that he was a powerful wizard, which opens up itself to lots of fun card designs, and that his character evolves significantly throughout The Lord of the Rings
5 Rapunzel, Gifted With Healing (Challenge Promo, 4) $191.57 Long Hair, Valuable Cards Rapunzel, Gifted With Healing has stood strong as one of the best Amber Ink cards for its supportive prowess and, like all the challenge promo cards, this helps it be a super valuable card for both collectors and players
This way you can enjoy pack opening while still ensuring you eventually get those must-have cards
Its limited to once per turn, so the ability isnt that powerful