Combine Magic

Allows the caster to combine two spells for an Action. Or combine three spells, which will cost both the players Action and Bonus Action. Effects of combined spells all happen at once.

Spell Level Rules. When combining the effects of two or more spells of different levels, the lowest spell slot is used. For example, you could cast delayed blast fireball and magic missile and the casting of both spells would take a 1st level spell slot, instead of expending both spell slots. Because of this if you combine any spell with a cantrip, because a cantrip is technically a lower level spell than a 1st level spell, you could combine any spell with a cantrip and not expend the spell slot. For example, you could cast vicious mockery and power word kill and keep your 9th level spell slot unexpended.