Spellcasting. The gnome is an 8th-level spellcaster with Intelligence as his spellcasting ability (spell save DC 15, spell attack bonus +7). The gnome has the following Cleric & Wizard spells prepared:
Arcane Recovery (1/Day). As part of a short rest, the gnome can recover an expended 2nd-level spell slot or two 1st-level spell slots.
Arcane Ward (1/Day). When the gnome casts an abjuration spell of 1st-level or higher, he can simultaneously use a strand of the spell's magic to create a magical ward on him that lasts until he finishes a long rest. The ward grants 8 temporary hit points.
Whenever the gnome casts an abjuration spell of 1st level or higher, the ward regains a number of temporary hit points equal to twice the level of the spell. Even after the ward has 0 hit points, its magic remains & the temporary hit points will recharge for the feature's duration.
Channel Divinity: Touch of Death (1/Day). The gnome can destroy another creature's life force by touch. When he hits a creature with a melee attack, the gnome can use Channel Divinity to deal an extra 13 necrotic damage to the target.
Gnome Cunning. The gnome has advantage on all Intelligence, Wisdom, & Charisma saving throws against magic.
Reaper. Whenever the gnome casts a necromancy cantrip that normally targets only one creature, the spell can instead target two creatures within range & within 5' of each other.
Speak with Small Beasts. Through sounds & gestures, the gnome can communicate simple ideas with Small or smaller beasts.
Shortsword (+1). Melee Weapon Attack: +7 to hit, 5' reach, one target. Hit: 7 (1d6 + 4) piercing damage.