The H.I.V.E.'s power revolves around three core concepts:
Unlike traditional summoners like the Boneshaper, Prism does not just stand behind its pets. You are a "Mode-Switcher": BoardGameGeek Modes vs. Summons frosthaven prism guide
A fundamental card. The top provides a cheap, mobile flying mode. The bottom gives you a crucial early-game Attack and Move action. frosthaven prism guide
Every summon card in your deck has two functions. You can play it as a standard summon, or you can use a "Transfer" action to inhabit its body. frosthaven prism guide
The top provides your heavy-hitting melee mode with high health. The bottom allows you to pivot your positions instantly.
Your persistent top actions deploy mechanical summons called Modes.