pokemon 2 player starter set card list TCG: Base 2-Player Set Theme Deck Sealed – TBC Games their family Disney Lorcana 2-Player Starter Set:

This red artifact is a color-shifted version of Cranial Plating, giving the equipped creature +1/+0 for each artifact you control

Whenever a creature dealt damage by Madame Vastra this turn dies, create a Clue token and a Food token

Yes, occasionally youll get multiple Void Rend, but thats a lot of mana to pay for something that has a really limited restriction on what it can copy

Mark Rosewater spoke on his podcast once about how its tricky to dial in the balance of a new thing like this specifically the very first Equipment cards, in that instance

So unless there is some pattern where similar cards appear to be rarer or more common, or the sample size is a lot larger, brute force wont deliver definitive answers (though it is still interesting of course)