Exterminatus is a board wipe that removes indestructible from opposing permanents
I decided to add it because taking an extra turn and annihilator is nasty, and that's made this one of the marquee creatures to cheat into play, but I still think Sneak Attack and friends are the real offenders
I think this is my last idea, Necrogoyf can have a decent power if the game has gone long, not as good as Lord of Extinction, but you can't run two of that, right
The broken stuff at 9 mana you want is costly already (see Expropriate), so why not already have better tutors if thats your Commander vibe

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Such triggered abilities start with when or whenever