Same thing with the Card Theft theme with sweet cards like Don Andres, the Renegade and Ramirez DePietro, Pillager, and the Threaten theme with Coercive Recruiter
Mono Red, same as it ever was, is about attacking with fast, efficient creatures backed up by burn spells and combat tricks, and it uses Bloomburrow's valiant mice to great effect
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Combine these effects with the huge amount of cards with low converted mana costs and I can already see this set having a huge effect in many of Magic The Gatherings most popular formats especially Pioneer, where Im already brewing a Toxic Selesnya deck
If the second Vehicle is much worse than the first, the third is basically impossible to utilize
If multiple replacement effects would modify how damage would be dealt, the player being dealt damage (or the controller of the permanent being dealt damage) chooses the order in which to apply those effects