mtg blue extra turn cards Teferi, Timebender | Dominaria | Modern take an extra turn after this one. What is the blue card

The Augur had basically been a mainstay of the deck for its entire existence, mostly feeding off of how powerful the generals plus ability was in combination with the fact that Brainstorm is a historically powerful card

(2017-11-17) If you put an Aura onto the battlefield this way, you choose what it enchants as it enters the battlefield

This is doubly true of typal payoffs that care about how many of the supported type of creature you control, or ones with creaturefall effects that want to see more bodies enter the battlefield

It also triggers cards that care about permanents entering the battlefield (if the spell resolves), and so on