It can be especially spicy if youre on the verge of firing off an ultimate ability, though
To explain this, let me first explain a design term
That means you can use it to avoid any targeted spell, any board wipes that destroy things instead of exiling them or just use it to avoid losing creatures in a big attack
Thus, this is how Dual-Ink cards work in Disney Lorcana and how they have the potential to significantly increase the game's standing
Mostly this is because it only costs 1R but it is arguably the most powerful of that group anyway
Sadly, we haven't seen any more new MTGA codes come through this service in the years since - but there's always a chance, so if you're constantly on the hunt for fresh codes, it's worth periodically checking in on your Prime Gaming account (there's also a bunch of free videogame downloads and other goodies there, of course)