As for the card, it's a copy of Akroma's Will, an instant that lets you choose between all your creatures gaining flying, vigilance, and double strike, or lifelink, indestructible, and protection from each color until the end of the turn
My inclination is to go for an artifact token focused build with Treasure production and Brudiclad, Telchor Engineer to provide plenty of pressure with Akiri, while Silas provides late-game card advantage
The most common pack would have 2 Rares and a foil Common
Tactical Teamwork Amber and Sapphire Starter deck The Tactical Teamwork Amber/Sapphire Starter deck has a strong go-wide strategy with plenty of card draw to prevent the build from running out of gas
Emerald can be an extremely fun ink colour to play for this reason, and boasts some of the best Lorcana cards in The First Chapter as a whole, allowing the opportunity to mess with rival players and become a real thorn in their side
And an amazing illustration by Yoshitaka Amano definitely doesn't help bringing the price down