Its a bit too complicated for newer players, but it should be a blast for anyone with a solid understanding of how best to use planeswalkers
That's what happens when you combine Tinker (which could get out the Jar almost immediately) with Megrim (so that your opponent would take 14 damage from a single Jar discard, assuming they could not play any cards in time)
This mount can be unlocked early on, too, as it has no required level or quest involved
Whenever a land enters under your control, you add one mana of any color
Haze of Rage has storm and Buyback, so it's going to be a great surprise finisher in quite a few red decks
At common, Cryoshatter helps you reach the late game, while Fungal Colossus rewards you for having differently named lands, such as basics in your splash colors