Zur the Enchanter

Flying
Whenever Zur the Enchanter attacks, you may search your library for an enchantment card with mana value 3 or less, put it onto the battlefield, then shuffle.

Zur remained aloof from Terisiare's suffering, intent only on his own perfection.

Dominaria Remastered

Secret Lair Drop

Celebration Cards

Double Masters 2022

If you put an Aura card onto the battlefield with Zur's ability, you choose what it will enchant as it enters the battlefield. An Aura put onto the battlefield this way doesn't target anything (so it could be attached to an opponent's permanent with hexproof, for example), but the Aura's enchant ability restricts what it can be attached to. If the Aura can't legally be attached to anything, it remains in your library.