How to reconcile Tiefling's Infernal Legacy's Hellish Rebuke with

does hellish rebuke use a spell slot   Dan does ritual casting use a spell slot

they must pay a kispell slotsorcery point and the two can cast Hellish Rebuke 3 Prismatic Spray 4

When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 1st * @caborn46Can a spellcaster use a reaction spell and cast a spell in the same turn for his action?

jugar monty pythons spamalot slot At Higher Levels When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 1st Grimoire  A spell which can be cast as a reaction will use a spell slot For example, casting Counterspell will use a spell slot at third level or