If a Clue you control is already a creature when Tangletrove Kelp's second ability resolves, Tangletrove Kelp's second ability will overwrite any previous effects that set that creature's power and toughness to specific numbers
The Rex and Hamm cards above are in Wilds Unknown and fans might open one of them or some of the other exciting cards in the set when they are available for prerelease on May 8
I was talking with a person I know about this deck on Dueling Network, I lent him the list, he tried it while I was building another thing, when he finished he said "this deck sucks, it won't never start the loop at the end, it's bad"
Lucky players might even encounter a Roaming Form Gimmighoul
Target Sun Titan or Heavenly Blademaster as the creature, and Swiftfoot Boots and Mantle of the Ancients as the Aura and Equipment, and watch your entire Aura graveyard enter your battlefield again on a very sizable body with hexproof and haste