Some of the best dinosaur commanders are Naya commanders, as is the dinosaur-themed Commander precon: Veloci-ramp-tor
Related As with Black Lotus, anything that provides mana for free is practically a must-include in MTG
For four mana, Maskwood Nexus makes every creature you control (plus the ones in your hand and library) every creature type, then taps to crank out 2/2 changelings on demand
BPhillipYork: Pumping up your spawns and scions with this is solid if that is what you want to do with Eldazi, it's a go wide horde that slowly gets tall
Despite its recent downshift in rarity, it is still the second most played removal spell of its type, falling only behind Murderous Rider due to its added utility of also being a creature when needed
One non-dragon commander that may like the Hellkite is Child of Alara, a WUBRG deck that may wipe the entire board to start things over, then reanimate threats like Two-Headed Hellkite to resume the offensive thanks to haste
