What it does
Crown of Madness isn't a standard keyword—it's a specific aura card from Onslaught. It enchants a creature, and during each of your upkeeps you may pay 
. If you do, you gain control of that creature until end of turn, untap it, and it gains haste. However, that creature must attack each combat if able during that turn.
The nuance people miss: the control effect only lasts until end of turn, so you must pay every upkeep to keep stealing it—it's not permanent theft. Also, the "must attack" requirement is forced, but the creature attacks for you since you control it, and your opponent chooses nothing. If you don't pay, the aura just sits there doing nothing that turn.
In Commander, it's largely outclassed by better threaten/control-magic effects, but it shines on big creatures with annoying abilities you'd rather borrow repeatedly—just budget the mana each turn, and watch for sacrifice outlets letting opponents dodge your attack.
. If you do, you gain control of that creature until end of turn, untap it, and it gains haste. However, that creature must attack each combat if able during that turn.
The nuance people miss: the control effect only lasts until end of turn, so you must pay every upkeep to keep stealing it—it's not permanent theft. Also, the "must attack" requirement is forced, but the creature attacks for you since you control it, and your opponent chooses nothing. If you don't pay, the aura just sits there doing nothing that turn.
In Commander, it's largely outclassed by better threaten/control-magic effects, but it shines on big creatures with annoying abilities you'd rather borrow repeatedly—just budget the mana each turn, and watch for sacrifice outlets letting opponents dodge your attack.Iconic cards with Crown of Madness
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