skull meister, for sure, inside any deck it can counter such traps always.
yubel alone can't counter easily this deck if you know how to chain traps. You have many chances in order to avoid wasting more than a single "survival's end" to shut yubel up.
in the past it didn't have this many, also survival's end doesn't count because you don't get it from packs, canadia is the only ur you used to need from packs and you didn't need 3 to make a kog worthy deck when this deck was popular, it was the best f2p deck