at type 0 the client stopped working the elixir bar out for itself and
started reading it from the summoner in our snapshot - which never
moved, so the bar sat where the opening state left it and no card could
be afforded.
the rule from LogicSummoner::tick: an accumulator gains five thousand a
tick and one mana is granted for every MANA_REGEN_MS * 100 / MAX_MANA it
holds, the remainder carried rather than dropped. that works out at
2.8 seconds a mana with the shipped globals, and halves in the last
sixty seconds through MANA_REGEN_MS_END, which is the speed-up the game
has always had.