Runic Pyramid

Runic Pyramid is a Boss relic in Slay the Spire 2 that causes you to retain your entire hand at the end of each turn instead of discarding it. This is one of the most powerful and game-changing Boss relics available, fundamentally altering how you play every combat encounter.

With Runic Pyramid, you accumulate cards in your hand over multiple turns, giving you access to your full deck much faster than normal. This means you can save key cards for the perfect moment, always have defensive options available when you need them, and set up devastating combo turns by stockpiling the right cards. The relic effectively removes the randomness of draw order as a factor in your fights.

The major risk of Runic Pyramid is hand clogging. Status cards like Wounds, Burns, and Curses that you cannot play will permanently occupy space in your hand, reducing the number of useful cards you can hold. Ethereal cards become much better with this relic since they exhaust at end of turn, preventing clutter. The relic synergizes incredibly well with Watcher's Retain mechanics and any deck with low-cost cards that can be played down each turn. Avoid Runic Pyramid if your deck has many unplayable status cards or if you lack ways to manage hand size.