This ability completely disrupts standard combat strategies, forcing the opponent to play defensively and react to a potential disruptive next turn
Both these cards are unfortunately pretty expensive on the market today thus you may consider to add some other Ruby and Emerald cards that can benefit from any Song or action that has been played like Roxanne or that can add some Aggro to your decklist like Cursed Merfolk, Ursulas Handiwork
(Scryfall note, 2017-04-17) Vial Smasher's triggered ability triggers when you cast your first spell each turn, regardless of whose turn it is
However, pair it with item cards, and you could be questing multiple times a turn in a terrifyingly good combo
He's been to Pax and Summer Game Fest for reporting, and has a specific focus on MMORPGs, JRPGs, mobile gaming, and Tabletop gaming, specifically Dungeons & Dragons and Disney Lorcana