The cost-reduction ability of Johann's Stopgap doesn't change its mana cost or mana value, only the total cost you pay
Magic Origins doesnt really feel like a core set as much as a one-of set thats outside of the normal core-set feel
It's just as powerful as Wrath of God, but has the option to just target one dork if that's all you care about or you don't want to sweep your side of the table
Unfortunately, this color-changing technique was a source of confusion for Wizards of the Coast, who released the Pokmon Trading Card Game a mere month after the anime was released in North America
Vronos, Masked Inquisitor, Jace, Architect of Thought, Chandra, Torch of Defiance and Ajani Steadfast have very strong final abilities
and the Boros mechanic Radiance, because it created rules confusion (apparently playtesters were shocked it was symmetrical)