Boss Is On a Roll certainly qualifies as a meta changing card
1 Yenna, Redtooth Regent Yenna, Redtooth Regent's Commander deck can use its enchantment-copying ability to slow down enemy creatures with Auras like Darksteel Mutation and Song of the Dryads, but its best cards are more proactive
For example, this means that normally, if you control Hunting Velociraptor, you can cast Grim Giganotosaurus for its prowl cost only if a Dinosaur dealt combat damage to a player, but if an effect causes the spell to have other creature types, the prowl ability is also satisfied by a creature with those additional types having dealt combat damage to a player
A card like Gollum, Scheming Guide is just fun as your commander
Using a double flicker target spell, you can get back not just your flicker spell, but something else
I discuss a better pipeline for making cards with custom art there: Making a Custom Hellboy Magic Deck I also made a custom engraved deck box to hold the results: Card Boxes Also, its worth noting that MPC Autofill appears to have gone down and replaced by a fork
