@ManaChrome tribal actually isn't a supertype.
From the comprehensive rules of magic:
205.2a The card types are artifact, conspiracy, creature, enchantment, instant, land, phenomenon, plane, planeswalker, scheme, sorcery, tribal, and vanguard.
Bump with an Update: I will not have much access to this site following August 6th or so, and therefore am extending the deadline to August 20th (*cough* has nothing to do with lack of newer entries *cough*)
1) Reactivation Challenge #48: Planeswalker Lore Contest (Feel free to stop by!)
Reactivation Challenge #44: Legendary Turncoats (Closed) (@Corwinnn created the challenge but we co-hosted/judged it).
Mechanic Synergy Contest (Closed)
2) I would say…
Here are my five old cards (I'll definitely do the new entries at some point):
Art: Dragon Prince by Edric
Art: Corrupted Signs by Dmitry Burmak
Art: Ooze by Henry Peters
Convoker of Alphas