pokemon gym heroes booster pack 1 Leaders' Stadium Japanese Box. — Japan2UK Players must have a 60 card deck of Pokemon cards to play! I opened a GYM HEROES

The answer to this is often including ramp spells that aid and even quicken the generation of mana in a Commander deck

I stipulated blue in the title, this was merely so I didn't have to work out where Mana Tithe fits into the mix and spend a lot of convoluted time discussing the implications of a functional reprint in a different colour

You can find non-foil borderless celestial basic lands in Play Boosters

And yes, you can equip another mobilize creature with it to stack the triggers

It lets you constantly cast instant spells with the multikicker ability

The cost to sacrifice a land at the upkeep is mandatory, but you'll always get a card from that happening thanks to its other effect