mtg soundwave commander deck Soundwave, Sonic Spy》 Analysis｜ウニ沢 You may cast the copy without paying its mana cost Duel-Commander Soundwave deck by NGA

The deck was growing in popularity thanks to the release of Leyline Binding, combined with Tribal Flames and Territorial Kavu

I dont know if Beza, the Bounding Spring belongs in the main deck or sideboard, but it will see Standard play

9 Arcane Signet Futureshifted Frame - $114.41 The Commander staple makes an appearance as not only one of the most valuable cards in Mystery Booster 2 but also as one of the most expensive variants of the card in general

arXiv:1904.09828

Short of a reprint or the fallout of a buyout spike, there isnt anything that might cause any of the these cards to drop in price

For each creature destroyed by this effect, its controller may put a creature card from their graveyard onto the battlefield