The exiled card will return to the battlefield at the beginning of the next end step even if Abuelo, Ancestral Echo is no longer on the battlefield at that time
It has a limited design space, so WotC wont use it very often, though as we've seen, these cards get reprinted in Commander precons from time to time, or we'll get a new tempting offer card when it makes sense
At the beginning of each combat phase, we get a 2/1 Myr artifact token, after which another token controlled by ourselves may be selected, from which all other tokens become copies
That's because the cards are extremely rare to pull
It can deal two damage to a creature without any other targets open whereas Red can do that better with Shock at one mana
Coiling Oracle: a classic reprint