Here are base-Red cards that could be reasonable splashes: Building up to six mana can be a huge deal for Big Red style decks
I, II, III Create a 3/3 black Dalek artifact creature token with menace for each lore counter on Genesis of the Daleks
Xenagos, the Reveler 4 On paper this looks like another Wildspeaker but in parctice it is much worse
Lessons Learned costs 0 resources and is best suited to a slow, grindy deckparticularly a reaction-heavy Warrior, Ninja, or Assassin buildthat expects games to go long and runs several different attack reactions it wants to recycle, such as Ironsong Response, Razor Reflex, or class-specific reactions
Hasbros Magic: The Gathering and Segas Sonic the Hedgehog are teaming up for three new card collections based on the Sonic universe, and Variety has a first look at one of the sets
This card in particular was flexing in price quite a bit even as this article was being written, so this one is the most subject to rapid change