Enchanted cards sit at the top
Myrkul has a unique death trigger that can play in both aristocrat and enchantress spaces, or you can go the Devoted Druid combo route and Ill just play on my phone while you do your thing
Tarmogoyf is a creature that gains more power with the more card types in all graveyards, scaling all the way up to a 9/10
When players do run five-color decks, they're most often built around specific, powerful creatures and spells that have all five colors of mana in their mana cost - most of which are dragons, such as Niv-Mizzet, and Ramos, Dragon Engine
Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owners control with a +1/+1 counter on it.) It blindly marches on Thrabens gates, guided by its masters direful will