Delerium Elemental

The delerium elemental can move through a space as narrow as 1 inch wide without squeezing.

The delerium elemental can enter a hostile creature's space and stop there. A creature who enters or starts its turn in the same space as the delerium elemental must make a Constitution saving throw. It takes 2d6 necrotic damage on a failed saving throw.

The delerium elemental makes a number of slam or hurl flame attacks equal to half this spell's level (rounded down).

Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one target. Hit: 1d10 + 4 + summonSpellLevel bludgeoning damage.

Ranged Weapon Attack: your spell attack modifier to hit, range 120 ft., one target. Hit: 1d10 + 2 + summonSpellLevel fire damage. Before or after making this attack, the delerium elemental can teleport up to 10 feet to an unoccupied space it can see.

Melee Weapon Attack: your spell attack modifier to hit, reach 5 ft., one creature. Hit: 2d8 + 4 + summonSpellLevel bludgeoning damage, and the target is grappled (escape DC 16).

A creature hit by the delerium elemental's melee attacks must make a Strength saving throw. On a failed saving throw, it is pushed 10 feet away from the delerium elemental.