Descent of Dragons Card List & Guide
Battlecry: If you're holding a Dragon, Discover an upgraded Mage spell.
I'm only crafting this as an excuse to use the term "Malygeese".
Stats are pretty good too, could be worse for a legendary this strong, but at least it has an instant effect.
Confirmed by hearthstonetopdecks:
1 mana frost nova
1 mana polymorph
0 mana frostbolt
8 damage fireball
8 damage flamestrike
4 cards drawn arcane intellect
3 spells tome of intellect
6 damage arcane missiles
2 damage arcane explosion
Some examples of upgraded mage spells here: https://www.hearthstonetopdecks.com/cards/malygos-aspect-of-magic/
I just want a Tri Pyroblast
upgraded mage spell?