Seeing as players begin with 40 life in Commander, winning the game with this Cat Beast is fairly trivial in a dedicated lifegain shell, though having some redundancy via Test of Endurance, or (for the devoted) Celestial Convergence might be a good idea, too
The Real Centerpiece While the Venom, Lethal Protector and Valki, God of Lies combos are the spice that pushes this deck over the top, they arent part of the core engine that makes this deck tick
Another idea they explored was having it come with pieces of bubble gum, but putting something edible in the booster packs made them subject to stricter rules which could not be complied with
Burn was a common method of removal during this time, as you had cards such as the #2 below or Urza's Rage that were heavily played
Non-Mutating Kaiju These giant monsters can be mutated onto, but they just can't do it on their own, as they don't have the Mutate ability