The Ur-Sphinx - Synergies

Eminence already discounts other Sphinx spells by {1} from the command zone, before The Ur-Sphinx is even cast. Stacking additional Sphinx-typal cost reducers compounds that discount instead of replacing it.

Stacked Sphinx cost reductionUnesh, Criosphinx SovereignPHOU versionView card ->Typal cost reductionUrza's IncubatorMH3 versionView card ->Typal-conversion cost reductionMaskwood NexusDRC versionView card ->

Generic three-color identity fixing supports both the commander itself and its Sphinx-typal support package -- there is nothing Sphinx-specific about this need.

Commander-identity landCommand TowerEOC versionView card ->Commander-identity rampArcane SignetSOC versionView card ->

These Sphinxes receive the Eminence discount directly and each contribute their own standalone payoff -- evaluate them on their own text, not only as attack-trigger fodder.

Sphinx finisherMagister SphinxCON versionView card ->Standalone value SphinxTivit, Seller of SecretsNCC versionView card ->Extra-turn SphinxMedomai the AgelessTHS versionView card ->Mid-curve Sphinx engineDefiler of DreamsDMU versionView card ->Extra beginning-phase SphinxSphinx of the Second SunMKC versionView card ->Sphinx bodyDazzling SphinxC21 versionView card ->Sphinx bodyEthersworn SphinxMH2 versionView card ->Sphinx finisherSphinx of the Steel WindC13 versionView card ->

The mill/free-cast trigger scales with the number of attacking Sphinxes you control, not with combat damage dealt or a specific opponent targeted -- cards that reward or amplify a wide Sphinx attack step matter more here than raw power.

Safe evasive attacker with its own free-cast triggerYennett, Cryptic SovereignCMM versionView card ->Attack-trigger doublerRoaming ThroneLCI versionView card ->Wide-attack draw payoffWindreader SphinxM19 versionView card ->

You mill yourself along with every other player. This research pass records that as a build-path watch item, not a confirmed reanimator Strategy relationship -- no independently verified reanimation-package support cards were added here.

Graveyard-adjacent toolbox spellSphinx's ApproachFRA versionView card ->Graveyard-fill payoffSphinx of the ChimesRTR versionView card ->