Elderwood Sprout

You call a root of Elderwood to soar up through the ground. Roll a spell attack to spear a chosen target within range, the target must be on the ground or hovering no further than 5 feet above it. If a target is speared, the root tears through their flesh, sprouting multiple thorned branches as it surges through their body. The target takes 20d12+30 piercing damage, and is restrained by the sprout.

Trying to remove the plant from the targets body, requires either a wish, greater restoration or any magical effect that causes plants to wither. If the target tries to move, is forcibly moved, or others attempt to move the target or pull out the root, the target takes 10d6 piercing damage.