Every time he taps, you get as many Goblin tokens as you already have Goblins
Bladegriff Prototype isn't bad, but its effect doesn't always help you as much as it helps others, and once a multiplayer game is down to two players, it's basically just your opponent sacrificing permanents, which might not be that impactful in the late game
It offers 4v4 multiplayer and all Magic cards are available for free as well, so no need to invest anything other than your time
When you get to 6 mana, unlocking Porcelain Gallery is huge, but this white enchantment doesnt do anything if you dont have creatures, mind you
During grading, the cards collectible value or rarity isnt considered, meaning both common and rare cards can achieve high grades