One that can even make its own tokens
All of these will trigger the Aethermage, and you can tap a mana to draw a card when they do
You won't get a new-to-Modern rare or mythic rare reprint with this foil stamp
You get one card, but have two versions of them, often times with new abilities and more power on the back, at the cost of a somewhat situational flip condition
I am unsure how many of each of these I would play in an Esper Control deck, since we have some lands to work with already and they are very weak when drawn later in the game
This doesn't just apply to your black Wizard tokens, but any Wizard you control, and applies to both noncombat and combat damage , making them great attackers as well