Reliable ramp and efficient fixing allow both commanders to enter play on curve and remain available after removal
The trick to leveraging this companion as a commander is loading your deck up with Clone variantswhich generally cost 4to copy Gyruda over and over

Section 28 Summary Input: One playing of King Crab Output: Lots of reuse of Skyshroud Poacher Layer count: For each Bloodbond March, for each Clash of Realities on a new Mimic Vat, for each Guilty Conscience on Mimic Vat, for each Rite of Passage putting counters on Mimic Vat, for each Doubling Season on the Rite of Passage counters added to Mimic Vat, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to Mimic Vat, for each Rings of Brighthearth on Mimic Vat's ability, for each Clash of Realities on King Crab, for each Guilty Conscience on King Crab, for each Rite of Passage putting counters on King Crab, for each Doubling Season on the Rite of Passage counters added to King Crab, for each Rings of Brighthearth on Sinking Feeling's ability while it's attached to King Crab, for each Rings of Brighthearth on King Crab's ability, for each Grip of Chaos, for each Psychic Battle...15

Obviously, since their first ability isnt remarkable at all, we can gloss right over that and look at whats important
(2022-04-29) Split second doesn't stop triggered abilities from triggering, such as that of Chalice of the Void