Its going to burn through opposing life totals in any deck that cascades or impulse draws
While it only has one strength and one willpower, Sisu makes up for it by having the Evasive keyword and being able to banish one character on play
What Knight Paladin allows you to do as a designer is offer a big five-mana threat to anybody that wants it, regardless of what colors theyre playing, without having to go heavy on one of the least desirable points of the mana curve
In an ideal game, you will never run of out cards in your hand, but reality never is ideal
It gives your vampires +2/+2 so it now effectively makes 4/4 flying vampire tokens instead
It has never lost quickly or easily, and if it wins slowly too - that is in flavor: "I cannot think of the deep sea without shuddering at the nameless things that may at this very moment be crawling and floundering on its slimy bed, worshipping their ancient stone idols and carving their own detestable likenesses on submarine obelisks of water-soaked granite