This initial synergy is deceptively strong
Amber/Sapphire Playstyle Tactical teamwork is an aggressive deck with low-average ink-cost characters, very few uninkables, and quite a few tricks it can use to catch your opponents' off guard
It's actually Lampshaded in-game: one of the Mediator class's abilities is called "Mimic Daravon," a technique that puts enemies to sleep by supposedly imitating the game's comically obtuse tutorial instructor character
The buff to your creatures is nice, but forcing them to attack each turn definitely needs to be something to work around
In this sense, Horn of Valhalla both acts as a way to develop your board and as a payoff once your board is developed, which is quite powerful
In addition to the themed boosters, Ravnica: Clue Edition comes with a pack of 21 predetermined suspect, weapon, and room cards and just like in Clue, one set of those is secretly put in an envelope at the start of the match, while the others are divided randomly amongst all the players