For example, if your Summon: Bahamut with one lore counter on it loses all abilities because someone attaches Observed Stasis to it, it'll won't gain lore counters via the turn-based action until it has chapter abilities again (probably because you removed the Observed Stasis somehow.) New Keyword Ability: Job Select Many FINAL FANTASY games allow characters to choose (and sometimes switch between) different jobs with unique strengths and abilities
The last time we checked, that was good for literally nothing
Flawless Maneuver is one of a cycle of spells you can cast for free if you control your commander, and Sigardas Aid gives you a cheap way to put Equipment on Cap ready for him to lob them
It was such a funny problem for Wizards of the Coast to have to tackle and a rod that, really, they'd made for their own back by picking an IP so disconnected from the general vibe of Magic: The Gathering
I don't really see this doing anything phenomenal outside of maybe unlocking some domain or converge spells in an otherwise mono-colored deck, but this isn't really a broken ability