Drawing two cards a turn as a plus two is going to be nearly impossible for an opponent to come back from, unless theyre already way ahead
It then converts into Prowl, Pursuit Vehicle when a card exiled this way is cast, becoming a 2/3 that when another creature enters the battlefield under your control you put a +1/+1 counter on it
Notably, its the only archetype with a Mount instead of a Vehicle as one of its signpost uncommons, but Lagorin, Soul of Alacria is a strong way to start your curve
In that case, you will only draw a card when it resolves
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That said, both Swords to Plowshares and Dispatch are more than playable, and I think which you pick first will depend largely on what your deck is trying to do