mtg pioneer legal cards in Pioneer, Rules Text: Flashback, 83 Elite Otter MTG Deck -

Sacrifice after III.) I Destroy target nonland permanent an opponent controls

Kuja, Genome Sorcerer / Trance Kuja, Fate Defied Kuja, Genome Sorcerer starts slow by making wizard tokens that deal chip damage whenever you cast noncreature spells, but once you control four wizards (token or otherwise), it transforms into Trance Kuja, Fate Defied, which doubles all damage your wizards deal

However, the Encore ability is a really nice bonus

Premium boosters are set-specific and follow their own rules, but Standard boosters have specific context structures

It falls into the same category as Tergrid in that the build-around might be more miserable than the card itself

This synergy is fantastic because Coatls are very good at leading to a stall where the opponent would rather not trade a creature for them and chooses to just cast more creatures while waiting to draw a removal spell, and then you can really punish them with Dead of Winter