You could choose a different order for each one though
Ambipom threatens to hit Spiritomb for a lot of damage quickly, and can move Metal Energy away from Dialga to a non-SP Benched Pokmon like Uxie
Probably not, but one can dream
Valakut, the Molten Pinnacle's triggered ability has an "intervening 'if' clause." That means (1) the ability won't trigger at all unless, at the time a Mountain enters under your control, you control five or more Mountains other than that new one, and (2) the ability will do nothing if you control fewer than five Mountains other than that new one by the time it resolves
Bello, Bard of the Brambles is a great commander, and the secondary commander Wildsear, Scouring Maw is great too if you want to shift to a more enchantment focus as opposed to straight combat
However, the sign was a letter T set inside a circle, which didnt translate to the non-English versions of the game