Cross Poison

You launch two different toxic spikes at a foe, causing a reaction if both spikes hit the same target. Make 2 ranged spell attacks against the target(s) in range. On a hit, the target takes 1d4 poison damage per spike. If both attacks land on the same target, the poisons merge and react again, dealing an additional 1d4 poison damage.

This spell's damage and bonus damage increases by 1d4 when you reach 5th level (2d4), 11th level (3d4), and 17th level (4d4).