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Card Name: Goyo Guardian/Assault Mode
Attribute: Earth
Level: 8
Image Goyo Guardian wearing Samurai Armor
Type: Warrior/ Effect
Effect: This card cannot be Normal summoned or set. this can cannot be special summoned except by Assault Mode Activate. This Card Cannot declare a Direct Attack. This Card can and must attack all your Opponants Monster's once each. Once per turn, when this card destroys a Monster by battle, You can special summon that monster to your side of the field, it cannot declare an attack this turn. If this card is destroyed and sent the graveyard, you can special summon one Goyo Guardian from your Graveyard.
ATK: 3300
DEF: 2500

Sort of like a beefed up Ultimate Tyranno with a side of Goyo Guardian

No point in limiting it given that Goyo itself is already limited...

Anyway, yeah, there's pretty much no Synchro Monster that at least some schmuck out there hasn't thought of a Buster form of.