Charlie's Charging Laser

Duration: Instantaneous OR concentration, up to three rounds (see below)

When you cast this spell you can choose to have it take effect the turn you cast it, or wait either one or two full rounds for it to take effect, having it take effect at the start of your turn on whichever round you choose. Whenever you decide to make the spell take effect, make an attack roll against your target. When the spell takes effect, a powerful beam of light erupts from your hands.

If you decide to have it take effect on the round you initially cast it, the target takes 1d10 radiant damage. If you decide to wait a round, the target takes 3d10 radiant damage. If you decide to wait 2 rounds, the target takes 5d10 radiant damage.

If you decide to release the spell on the orund oyu initially cast it, it functions as an insantaneous spell. If you instead decide to charge it, this spell requires concentration.