Scroll of Tarrasque Summoning

Source: Icewind Dale - Rime of the Frostmaiden

Scroll, legendary

Using an action to read the scroll causes the tarrasque (see the creature's entry in the Monster Manual) to appear in an unoccupied space you can see within 1 mile of you. The tarrasque disappears when it drops to 0 hit points and is hostile toward all creatures other than itself.

id:rflegendaryscroll