Quite frankly, Kadenas ability being limited also prevents one from breaking one of the Commander Commandments: Thou shalt not overcommit. Why Wizards Tribal
Card 151/165, Mew ex's Genome Hacking attack does not have a specified strength, because for three colorless Energy, players can choose any one of their opponent's Active Pokmon and copy their attack to use as Mew's attack
I know that the Mythics are all pretty exciting, and I spoke about that earlier so don't think I'm ignoring them, but you don't need me to point out Akroma's Memorial or cards without casting costs are incredibly powerful
They keep your health topped up
Sometimes a trigger is inlaid into the long text of another ability, but you can always recognize a trigger by finding the signal words in its text: when, whenever, at