Emerald Eruption

The caster raises their hand up with their thumb out, both ring and middle finger together; pinky and index apart with their palm toward the target area. Their palm has a runic symbol glow and emanate green neon light. The caster utters a chosen trigger word and suddenly 1d6 1 foot wide rigid pillars of emerald crystal strike up from the walls, ground celining or out of a willing entity(Choose One). The target must succeed a dexterity saving throw. If they fail they get it by all pillars, but if they pass they get hit by half. Roll 1d4 + WIS for each pillar that hits.