Well, it's upped. Also, rage elixir does 6. Look at other upped cards, graviton guard, graviton fire master, steel golem, jade (and even emerald) dragon can all take a bolt to the face. Also, double RoF will wipe your board.
Also, double RoF will wipe your board.
Plate Armor (on any creatures except phase salvager and ball of lightning) would stop double RoF. Massive Dragon. Vodoo Doll. Stone Dragon. Emerald Dragon. Light Dragon. Armagio. Elite Oty+2 devour kills, Lava Golem+some growths, Forest spirit+some growths, chaos power on most creatures, quintessence on any creature except phase salvager and ball of lightning, immortal, phase dragon, most shard golems, a burrowed devourer, a burrowed antilion, a burrowed shriker, a burrowed mutation, a mutation with high enough HP, an immaterialism mutation, vulture if enough creatures have died while vulture is in play, Pheonix, Grey Nymph, Auburn Nymph, White Nymph, Golden Nymph, (wont say turqouise+ability cause its ability shares the name quintessence and ive already said that) baslisk blood+any creature, Sky Dragon..
I think on a pretty standard basis a double RoF wont wipe field, but I'd definitely agree to triple RoF.