Tribal decks aim to make use of cards that reward a player for including primarily cards of that given type and are often incredibly synergistic
Combining this with something like Birgi, God of Storytelling can keep your mana topped up to keep the party going
Korvold works best in sacrifice decks as you may expect, as sacrificing gives Korvold +1/+1 counters and draws you cards, keeping your hand fresh by simply playing your deck how you want to play it
If either face has a color indicator or basic land type, those are also considered
The Treasure Planet card opens up a whole wealth of opportunities for players, allowing them to take advantage of the cheaper cost of Shift cards - as well as their impressive abilities - without needing to actually have the less powerful cards needed in their deck
However, the concept is right and the deck needs a finisher along the lines of Craterhoof We have to go back to earlier this week for how I thought to address this