There are already artifact creatures and enchantment creatures, but cards like Animate Artifact, Zur, Eternal Schemer, Animate Land, and Spark Rupture either add the creature type or convert the card into a creature, in effect replacing the type
The two things to remember when playing Thunder Dragon is to always leave a light and a dark, and always go second
This provides a way to buff up smaller historic creatures as well as turning things like artifactsincluding tokensinto a significant board presence that can function as a beatdown win condition
So lets imagine that clause isnt on Skeletal Scrying
I played as a purely casual player for a couple of years when I first got into Magic , and while we had free mulligans and no clue about formats, we still wouldn't let people play with silver-bordered cards