It has items, locations, Reckless challengers, Huey-Dewey-Lewey combos, and a couple of Rise of the Floodborn cards that weren't playable back then and still aren't playable now
Items are your unrestricted fuel
Triggering off any non-creature spells from artifacts to instants, whenever this dragon's controller casts a spell, they create a dragon token with flying, haste, and power and toughness equal to the spell's mana value
5 Sorcerous Squall Free Spells For Three Mana (Kinda) Delve is an interesting mechanic, one that is very, very good at letting you cast big spells for much cheaper
While not the most valuable Fossil card, the fiery Kanto Bird has become a favorite from the 1999 expansion
The inclusion of Treasure Mage in your Type 4 stack should be directly related to how many big artifacts it can fetch