The first set of cards with a tribal theme that jump to mind are the Lords
Cyberse Gadget X LIGHT Level 4 [ Cyberse / Effect ] ATK 1400 DEF 300 When this card is Normal Summoned: You can target 1 Level 2 or lower monster in your GY
But there are cards like this: The (mostly black) lifepay card are a great way to get more flexible payoffs in your cube and also shape the lifegain deck to be more proactive
Eshki is a bit more of a generic big creature commander, not having any specific Dragon abilities, but giving you a free draw when you cast a creature with power four or more, and then dealing damage equal to Eshkis power when you cast a creature with power six or more
Each Set Booster contains 12 Magic cards, 1 Art Card (includes a D&D monster stat block on the back in 33% of packs), and 1 token, ad card, or special card from Magic's history (a card from "The List")
Inexorable Tide is a very dangerous enchantment in infect decks and accelerates games a lot once its on the field