We had a box of Pokemon Cards and needed help assessing their value so we would know what to do with them The guy at this place was a walking Pokemon Card Encyclopedia, educated us on card values, shared the card selling market dynamics and made us a fair price offer on the entire box
Yule Ooze is a Gruul Ooze that destroys random nonland permanents at the beginning of your upkeep
Creature - Spirit Color tag templates(None) Trinket Mage When this creature enters, you may search your library for an artifact card with mana value 1 or less, reveal that card, put it into your hand, then shuffle
Some obvious directions were mechanics that referenced experience, leveling up, or limit breaks
Since over half your creatures are legends, including much of the established assassin support, it seemed like a natural fit