extra turn cards mtg Turns: The Best 28 Time Walks in Magic Ranked Target player takes two extra turns after this one. Extra Turns | EDHREC
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Some commenters were hung up on this card being a cast trigger

Training is a new ability introduced in Innistrad: Crimson Vow that allows you to put a +1/+1 counter on the creature whenever it attacks with a creature that has a higher power than it
The release date for MTGs Hatsune Miku Secret Lair Spring Superdrop is May 13 at 8am CT

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And, with that in mind, it's highly unlikely WotC will print any new ones anytime soon.
