How about a new element…DRAGON!!!
Monsters of this element have “crystal stars” instead of gold ones that indicate rarity. In turn they deal 50% more damage to the basic elements with AoE and 25% less damage to Shadow and Holy while taking 25% less damage from basic elements and 50% more from Light and Holy. I even have a new monster of this particular elemnt :-
Rarity : 6 blue stars
AoE (dragon’s roar)
Piercing Crystal (reduces users Hp by 25% and deals critical damage. Instantly kills and ignores Hg and shields).
Crystal Explosion (kills ALL monsters on field)
Crystallite( affects one teammate. That lucky guy takes only 50% damage from attacks for 3 turns)
Crystal Armor (reduces damage from anywhere between 30-70%)
Stray Crystal (every time it gets hit by enemy has slight chance to deal 20% damage back)
Before commenting this is op keep in mind this is a 7-star monster of Dragon rarity