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310.4b A battle has the intrinsic ability This permanent enters the battlefield with a number of defense counters on it equal to its printed defense number. This ability creates a replacement effect (see rule 614.1c)
That means if you play some buffs before combat, you can generate a ton of mana with Firebending Student, and then reinvest that mana to cast even more pump spells
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If an effect causes a permanent with station to become a creature by some means other than having the appropriate number of charge counters on it, it won't use any power and toughness values printed in its text box
This strategy means tons of land sacrifice, recursion, Exploration-style effects, and of course, payoffs for doing all of this