Is Slaking new BDIF?

We saw Slaking ex nearly make top cut at Stuttgart Regionals 2025, finishing 37th with a deck that has barely seen play in majors. This deck takes a lot of inspiration from Greninja ex / Pidgeot with its use of Grand Tree. You find yourself in a situation vs 2 Cornerstone Mask Ogrepon ex and a Munkidori, ready to take their last 2 prize cards. With your Fezandipiti ex already weakened, one more turn and the game is essentially over. You have 3 prize cards left. With a little luck you might be able to find a Pokemon without an ability to hit Cornerstone.