Urza's Ruinous Blast This can be both an amazing exiling removal spell since only nonland legendary stuff avoids it, or bad since your foes might have a ton of stuff like their Commander, planeswalkers and classics like The One Ring too that dodge it
However, as this theme develops and new proposals emerge, more specific answers will need to be released to establish a limiter that keeps the Metagame in a healthy state
Cinderella, Stouthearted will pack a punch too, with five strength and five willpower - which will go even further thanks to that Resist effect
After that, you must discard all the Fighting-type Energy cards attached to it
If you do, the total amount of mana you pay is reduced by that creature's power
I like pairing this with cards like Snapcaster Mage and Mizzix's Mastery that let me cast it from my graveyard without paying 8 mana