Anything that makes Treasure when it attacks is worth looking at for an aggressive deck, and the card draw gives your opponents a reason to keep taking a measly 4 damage
*Buy Abrade and Mouser Foundry cards on eBay, Amazon, and TCGPlayer
Sure, the new font and foil bubble work now , but whats to stop the next generation of counterfeiters from faking those too
The one downside of Their Number is Legion is that it exiles itself after casting it, but if it ever gets countered or sent to the graveyard through some enemy shenanigans, you can cast it from the graveyard at no additional cost
The result isnt only a complete shutdown of an enemy alpha strike, but also a long-term resource engine that leaves you with lifegain and extra utility
Thats why these leagues are such a cool test of deckbuilding ingenuity