Its a 1/3 with vigilance and prowess as well as two activated abilities: a tap to loot, (draw, then discard) and yet another copy target instant or sorcery spell you control. The second ability can only occur if Kitsas power is 3 or greater, but in a fast Otter deck, that shouldnt be too difficult making this an exceptional engine for any decks that care about firing off tons of impactful instants and sorceries
And since the Hero deck is faster out of the gates and presumably can inflict some significant damage before the Rats are much use on defense, if the Plague Rat deck does eventually shift to offense, must it hold some of its forces back, and if so, how much
Duplicates of ex cards are common in sets
Speaking of vocabulary, we changed 'in play' to 'the battlefield,' 'remove from the game' to 'exile,' and enchantments that enchant things to 'Auras.' Also, we eventually shifted things around so that every card type is simply listed