Confectrix, Destructive Angel

Flying, deathtouch
Thorns X (Whenever this creature is dealt combat damage by a creature, this creature deals X damage to that creature.Where X is this creature's power.)
Colourful- If you spent more than red and black mana to cast this spell, this creature gets a +1/+1 counter for each other color spent to cast it and it gets Aegis 3.