Dark Matter Strike

A black orb shoots into the sky and below in a 10ft radius, a dark circle appears. After 6 seconds, a bolt of dark lightning strikes the 10ft radius.

When the Player casts this Spell, it takes a Full Round before it lands. 

All creatures within a 10ft radius of where the Spell lands roll a Dexterity Save or take 1d4+x Damage.

All creatures hit by the Spell, Mark of Darkness, take Damage and become Marked.

The Mark, a black skull on the creatures’ foreheads, lasts for 2 Full Rounds.

If the Player who has Marked the creatures kills a Marked creature, the Player’s Stack increases by 1.

The Stack is signified using the modifier X.

At Higher Levels: When the Player casts this Spell using a Spell Slot of 2nd level or higher, the Damage increases by 1d4 for each slot level above 1st.