i know with multiple doubling seasons you double the counters/tokens again but that is because the counters/tokens are objects. this is a spell that has its damage doubled.
If you control both Dictate of the Twin Gods and Furnace of Rath, and a source would deal damage to a permanent or player, both their effects combine: Instead of dealing 3 damage, Lightning Bolt deals 12 damage (3 damage doubled and doubled again) (C.R. 616.2; see also C.R. 616.1).
This is similar to the case of you controlling two Doubling Seasons; in this case, if an effect would create one token under your control or would put one counter on a permanent you control, it creates four of those tokens or puts four of those counters instead, respectively, since the effects of both Doubling Seasons combine (C.R. 616.2).
Even if a replacement effect, such as from Doubling Season, Dictate of the Twin Gods, or Furnace of Rath, modifies an event, another replacement effect can in turn modify that modified event (C.R. 616.2; but see C.R. 614.5). This has nothing to do with the question of whether counters, tokens, damage, or spells are objects as far as the game is concerned.
EDIT (Jun. 22, 2022): Account for Furnace of Rath's latest Oracle text.
i know with multiple doubling seasons you double the counters/tokens again but that is because the counters/tokens are objects. this is a spell that has its damage doubled.
This is similar to the case of you controlling two Doubling Seasons; in this case, if an effect would create one token under your control or would put one counter on a permanent you control, it creates four of those tokens or puts four of those counters instead, respectively, since the effects of both Doubling Seasons combine (C.R. 616.2).
Even if a replacement effect, such as from Doubling Season, Dictate of the Twin Gods, or Furnace of Rath, modifies an event, another replacement effect can in turn modify that modified event (C.R. 616.2; but see C.R. 614.5). This has nothing to do with the question of whether counters, tokens, damage, or spells are objects as far as the game is concerned.
EDIT (Jun. 22, 2022): Account for Furnace of Rath's latest Oracle text.