mtg flashback cards Legal in Standard, Rules Text: Flashback, 42 The flashback cost is equal to its mana cost Snapcaster Mage · Ultimate Masters

In Infect decks, that one mana often represents lethal

Here's a way to think about it

This is an incredible ability that is sure to turn the tide in a game of Commander

For the entire history of Magic The Gathering, Legacy goblin decks were mono-red

It's creatures-only, which is a lot worse than Teferi's Protection, but I think that's a Mount-Everest-level hill to climb and it's still a great choice

Ultimately, this is a placeholder solution so that more time can be spent on fingerprinting and identifying headless browsers (EG: via how they do font rendering) so that the challenge proof of work page doesn't need to be presented to users that are much more likely to be legitimate