Borne Upon a Wind Borne Upon a Wind will take your broken combo piece and toss it onto the battlefield whenever you like
While certainly a card that falls on the side of wanting creature cards and not non-creature token generation cards it is powerful enough that you will fairly happily play it in either given the mana base
Once youre in on the Rat Colony/Relentless Rats plan, one of the most powerful cards in your deck is Thrumming Stone
Reanimator has been done in these colors before, but this deck is extremely committed to the strategy , with tons of card filtering setting up the graveyard and paying you off for keeping it full
Meria, Scholar of Antiquity is another great support piece, giving you the choice to turn dormant vehicles and other artifacts into either cards or mana as needed
Its less about big combos and more about tight pacing, clever resource use, and reading your opponent