>>14745904It's not that amazing for Standard, other than being a 'better' Diabolic Tutor in a mirror match, but in casual/EDH it'll be fucking insane. At first I thought it would be good in Vintage, since it's basically a second copy of Yawgmoth's Will and Strip Mine and all sort of other limited stuff, but then I remembered that for 3 mana you need, oh, Yawgmoth's Will for it to be playable in Legacy.
I doubt it'll have much of a splash in Standard beyond a possible sideboard card for mirror matches, but it'll be a Commander staple.