Good luck and leave me some comments
It merges whites mass destructive power with blues master spell knowledge to make an end-all be-all board wipe
In general, I would look at these two factors when looking to include cards not of your tribe's creature type: Is this creature so strong that it, on its own, is generally stronger than my tribal creatures when they are receiving bonuses and/or empowering my other cards
Finally, it gives us some answers to cards like Whip of Erebos, albeit only partial, crude answers
TCGPlayer Pro (Quicklist) offers scanning and listing tools through the TCGPlayer Seller Portal, but it's designed for TCGPlayer marketplace sellers rather than eBay sellers
Sevinne's Reclamation - Bring it back, and hit them again