Blightbog, The Bone Tree

Magical Resistance. Blightbog has advantage on magical effects and spell saving throws.

Spellcasting. Blightbog is a charisma type spell caster, and its spell attack modifier is +8 and his spell DC is 16.

3 time a day each(all spells up casted to 4th lvl). Inflict Wounds, Bestow Curse, Blindness/Deafness, Ray of Sickness.

1 every day. Blight.

Multiattack. Blightbog makes two Slam attacks or can replace a Slam attack with a Bone Antler attack.

Slam. +9 to hit, 3d6 + 5 bludgeoning damage, and 1d6 necrotic.

Bone Antler. +9 to hit, 2d8 + 5 slashing damage and 1d6 necrotic. The creature must make a DC 16 strength saving throw or be grappled onto his antler. Blightbog can have a maximum of 1 creature grappled onto 1 of his antlers.

Acid Injection(Recharge 6). Blightbog chooses up to 5 creatures(up to 60ft away), and acid protrudes from the green lines on his bark, each creature he chooses(can pick the same creature up to twice) must make a Dexterity saving throw DC 16. If they fail, they take 2d8 acid damage and take another 1d8 acid damage when they begin their next turn. If they save they take half and do not take anymore acid damage.

Blightbog, The Bone Tree has 1 legendary action, and he can use it after his turn or after another creatures turn. He regains it at the start of his turn. He can use the legendary action on the following choices below.

Slam. Blightbog makes a Slam attack.

Antler Attack. Blightbog makes a Bone Antler attack.

Spellcaster. Blightbog casts a spell he knows.