This can be absolutely back-breaking for certain decks
This one, however, I think is sadly going to be too inefficient for most people
The only saving grace here is the Pain lands present (Underground RiverUnderground River, Adarkar WastesAdarkar Wastes, Caves of KoilosCaves of Koilos), as well as a very welcome reprint for Hall of Heliods GenerosityHall of Heliods Generosity
Best Buy Switching to Invitation System for All Future Pokemon TCG Releases, A First for the U.S
Teferi, Time Raveler is the same way, as his passive power prevents players from casting instant-speed spells the moment he touches the table, preventing counterplay at a very early turn: as early as turn two if you can get some quick one-cost mana ramp out turn one
The bear can be seen riding a horse with a flying ghost bear in the background and a quizzical fish jumping from the water the horse is walking on