Scroll of Titan Summoning (Kraken)

When you take a Magic action to read this scroll, a Kraken appears in an unoccupied space in water that you can see within 1 mile of yourself. A kraken requires a body of water large enough to contain it, or the summoning fails and the scroll is wasted

The Kraken is Hostile toward all other creatures and disappears when it drops to 0 Hit Points. If the Kraken is summoned into a space that isn't large enough to contain it, the summoning fails, and the scroll is wasted.