Abandon the post (or some other red-only flashback spell) would work alongside a way to counter spite, such as Ivory mask (or Aria of flame giving the opponent life). But that isn't saving card slots.
To get to an archon trigger, you need to put a Kaverek's spite on the stack, which neither player can survive losing 5 life to post-woldfire. Additionally, even if you could safely resolve the spite, it wouldn't replenish the life spent on Hungry for more; only the life spent to create that spite trigger; so makes worldfire transitions too expensive to be repeatable usable during the volute hyperstage.
If the Epic experiment start works then a different mill card besides Shreikhorn can be used. But I can't find one that saves card slots. (Chromescale drake could work if there were a more efficient way to get enchantments from library to hand/battlefield than Arcanists's owl, but I can't find one either)
Giving arbitrary things creature types is bad; it allows a damaged goblin boom keg to survive and be killed later
I was also thinking of Resurgent belief; which can be cast with either As foretold (doesn't seem like it saves any resources), Epic experiment (which for x=2 also mills the omni - does this save a card in hand during the start?), or a cascade card (is Demonic dread safe?)
Ah yeah, doesn't work.
Flashback souls, trigger volute-fated and volute-flash. Resolve volute-fated, make a bunch of pathmages, move volute to flash. Use pathmage to put fated back in yard. Resolve volute-flash, move volute to fated, other volute dies; use pathmage to put flash back in yard. Resolve flash, use archon to return volute (on flash) and pious (via harmonic prodigy). Use a lower down BBM trigger to get archon back to hand; but we've netted pathmages.
This line does need prodigy, which is replacable with Mirror gallery; but there's a good chance a similar line still goes infinite without it.
Edit: In fact, the no-prodigy line is as simple as resolving the volutes in the other order; so the end state is volute-flash and volute-(instant other than fated)
Imposter mech seems close to working. But it can copy a Mutavault, which can be donated and give the opponent mana.
Going back to Dryad arbor might work if we can replace the green mana stage for blue?
Ah; however I'm not sure Floodchaser works with these manlands. It makes clones of them into islands as well as the basic, which makes too much blue.
Edit: Does Faerie conclave work? No player can get mana from it, including via imposter mech.
Dermotaxi looks like it almost works, as making it a thrull doesn't do a lot (using it puts it in the graveyard) and getting multiple copies involves fated. However, it doesn't work because the opponent can influence computations with it.
Using mycrosynth+march to animate enchantments also animates the auras, which kills them immediately. Can that be worked around, or do we still need opalescence?
Mycrosynth+chromescale drake also makes it easy to draw creatures, which might be bad. A thrull can go from exile under foundrry -> library -> hand, without needing a bloodbond march trigger.
it's a new way to get instant speed planeswalker activations, without needing to worry about the abilities of Teferi, temporal archmage getting in the way
I was also thinking of Resurgent belief; which can be cast with either As foretold (doesn't seem like it saves any resources), Epic experiment (which for x=2 also mills the omni - does this save a card in hand during the start?), or a cascade card (is Demonic dread safe?)
Also we still need a lifelinker to keep the opponent alive during computations (as well as enable Profane transfusion to be profitable)
Flashback souls, trigger volute-fated and volute-flash. Resolve volute-fated, make a bunch of pathmages, move volute to flash. Use pathmage to put fated back in yard. Resolve volute-flash, move volute to fated, other volute dies; use pathmage to put flash back in yard. Resolve flash, use archon to return volute (on flash) and pious (via harmonic prodigy). Use a lower down BBM trigger to get archon back to hand; but we've netted pathmages.
This line does need prodigy, which is replacable with Mirror gallery; but there's a good chance a similar line still goes infinite without it.
Edit: In fact, the no-prodigy line is as simple as resolving the volutes in the other order; so the end state is volute-flash and volute-(instant other than fated)
Gretchen Titchwillow doesn't wok; it makes both Groundskeeper and Weathered wayfarer redundant for getting lands to hand.
Going back to Dryad arbor might work if we can replace the green mana stage for blue?
Ah; however I'm not sure Floodchaser works with these manlands. It makes clones of them into islands as well as the basic, which makes too much blue.
Edit: Does Faerie conclave work? No player can get mana from it, including via imposter mech.
Mycrosynth+chromescale drake also makes it easy to draw creatures, which might be bad. A thrull can go from exile under foundrry -> library -> hand, without needing a bloodbond march trigger.
it's a new way to get instant speed planeswalker activations, without needing to worry about the abilities of Teferi, temporal archmage getting in the way