If the name were Curse of the Fire Giant, and you replaced the art with non-jokey art, and removed the flip aspect, then it would be a commonly played card, as the mechanics are in flavor for Red and work well at the kitchen table
I got beaten by an Infect player on the draw in a game 1 (which is reasonable), and I lost to Brandon Nelsons Wrath of God + Gideon Jura
I slip them in front of Corrupt because creatures are naturally more valuable (especially with lifelink) and easier to trigger again with a reanimation, flicker, or some other reuse
These cards are insanely powerful, but they need entire decks to be dedicated around them, and many aren't worth it due to just how much support they need
Should this happen, you can expect to see them shoot up this list in no time