As long as there are cards that specify certain tribes in them, it’ll be fine. Do you have an example?
Animar (low color weight), Doran (high toughness), and the like could be commanders for a tribal deck featuring multiple tribes just because they naturally favor certain aspects of a tribe's mechanical identity. You can put the tribal stuff in the 99.
When I think about dual-tribal I desire a deck with more cooperation between both tribes, something synergetic that'd be more "difficult" to do with other tribal pairs. For example, an Animar Hydra/Eldrazi deck aims to "get expensive creatures out", while feasible, the two tribes don't have much hand-in-hand unless you also add a theme to it, like Fight or Fling, which benefits greatly from big creatures. I saw a Kaalia deck called "Biblical Bungee", summon big angels, demons, and devils and fling them at people.
DUring the Onslaught block and Lorwyn block there are many dual tribals available, like Wizard/Merfolk which benefits from Innistrad/Zendikar block as well.
When I think about dual-tribal I desire a deck with more cooperation between both tribes, something synergetic that'd be more "difficult" to do with other tribal pairs. For example, an Animar Hydra/Eldrazi deck aims to "get expensive creatures out", while feasible, the two tribes don't have much hand-in-hand unless you also add a theme to it, like Fight or Fling, which benefits greatly from big creatures. I saw a Kaalia deck called "Biblical Bungee", summon big angels, demons, and devils and fling them at people.
Shu Yun, the Silent Tempest WUR Voltron Control
Temmet, Vizier of Naktamun WU Unblockable Mirror Trickery
Ra's al Ghul (Sidar Kondo) and Face-Down Ninjas
Brudiclad, Token Engineer
Vaevictis (VV2) the Dire Lantern
Rona, Disciple of Gix
Tiana the Auror
Hallar
Ulrich the Politician
Zur the Rebel
Scorpion, Locust, Scarab, Egyptian Gods
O-Kagachi, Mathas, Mairsil
"Non-Tribal" Tribal Generals, Eggs
As long as there are cards that specify certain tribes in them, it’ll be fine. Do you have an example?
Shu Yun, the Silent Tempest WUR Voltron Control
Temmet, Vizier of Naktamun WU Unblockable Mirror Trickery
Ra's al Ghul (Sidar Kondo) and Face-Down Ninjas
Brudiclad, Token Engineer
Vaevictis (VV2) the Dire Lantern
Rona, Disciple of Gix
Tiana the Auror
Hallar
Ulrich the Politician
Zur the Rebel
Scorpion, Locust, Scarab, Egyptian Gods
O-Kagachi, Mathas, Mairsil
"Non-Tribal" Tribal Generals, Eggs
Shu Yun, the Silent Tempest WUR Voltron Control
Temmet, Vizier of Naktamun WU Unblockable Mirror Trickery
Ra's al Ghul (Sidar Kondo) and Face-Down Ninjas
Brudiclad, Token Engineer
Vaevictis (VV2) the Dire Lantern
Rona, Disciple of Gix
Tiana the Auror
Hallar
Ulrich the Politician
Zur the Rebel
Scorpion, Locust, Scarab, Egyptian Gods
O-Kagachi, Mathas, Mairsil
"Non-Tribal" Tribal Generals, Eggs
Shu Yun, the Silent Tempest WUR Voltron Control
Temmet, Vizier of Naktamun WU Unblockable Mirror Trickery
Ra's al Ghul (Sidar Kondo) and Face-Down Ninjas
Brudiclad, Token Engineer
Vaevictis (VV2) the Dire Lantern
Rona, Disciple of Gix
Tiana the Auror
Hallar
Ulrich the Politician
Zur the Rebel
Scorpion, Locust, Scarab, Egyptian Gods
O-Kagachi, Mathas, Mairsil
"Non-Tribal" Tribal Generals, Eggs
Shu Yun, the Silent Tempest WUR Voltron Control
Temmet, Vizier of Naktamun WU Unblockable Mirror Trickery
Ra's al Ghul (Sidar Kondo) and Face-Down Ninjas
Brudiclad, Token Engineer
Vaevictis (VV2) the Dire Lantern
Rona, Disciple of Gix
Tiana the Auror
Hallar
Ulrich the Politician
Zur the Rebel
Scorpion, Locust, Scarab, Egyptian Gods
O-Kagachi, Mathas, Mairsil
"Non-Tribal" Tribal Generals, Eggs