Combine Morophon with a card like Fist of Suns and suddenly all your creatures are free!
Counterspells tend to get much better if they have more utility beyond just countering a spell, and Mana Drain does quite a bit more most of the time
Its drawback may look like its very punishing and can allow the opponent to surprise you via a mid-combat spell, but I never really saw that scenario play out since its damage prevention ability is a a conditional static ability so as long as its on when damage is dealt, it wont be prevented. (Thank you, @fenaris!) It usually plays out somewhat like a colorless Ashenmoor Gouger / Chimeric Idol where you typically dont bother trying to block with it (why am I blocking with my aggro guys anyway?) and, if need be, you cast a spell pre-combat to activate it (typically I used a large coin, like a quarter, to denote whether it was on or off)
The Job Select mechanic is a triggered ability found on many pieces of Equipment in the set
Another card I did consider for this slot is Cryptolith Rite, as this is a strong effect, especially for token decks
For this drop, there is a slim chance that your Bonus card could be an autographed version of one of the cards, signed by the character themselves
