The nastiest surprise with Chord of Calling is Darien, King of Kjeldor, who can give you a surprise army as you take damage, but Aven Mindcensor has paired with Chord in Modern for years, and an end-step Seedborn Muse is always welcome
Note: Before we get into this - almost all of this information about player psychographics for Magic: the Gathering comes from work published by Mark Rosewater and Matt Cavotta
(It's a black ability for those first time readers out there
Is Mondrak, Glory Dominus legal to play
They could be worth a lot of money, especially if we are talking about the original release of Pokemon cards
The front side alones already good to include in many different decks, and in Standard alone there are already cards that care about activated abilities like Agatha's Soul Cauldron, so it looks like a great build-around card across formats