They arent a tribe in any sense and are really just cool creatures to include in a Kenrith, the Returned King deck, which is exactly what I have for you here
White spells create 1/1 token humans
These lands were released in The Full-Text Lands Drop, which was a part of the Secret Lair Drop Series: Dr
Deploy your setup pieces, run out your threats, and finish with Tiamat to draw a new hand of dragons
Kiki-Jiki still takes the spot for my number one competitive goblin, just because of the history he has as part of the Splinter Twin deck
Blue in particular has some great defensive cards to help buy time while you ramp: Midnight Mangler, Caelorna, Coral Tyrant, and Howlers Heavy (which I draft primarily as a combat trick)