mtg vampire commander deck Edgar Markov Vampires Tribal Best Vampire commander besides Edgar?

This lets them play into the Human Typal sub-theme that 5-Color Legends tends to use

That said, I personally like Nahiri, Forged in Fury for her ability to circumvent commander tax and potentially play a lot of free cards

Other card games sometimes have guaranteed amounts of certain rarities in a booster box, or in a case of booster boxes

Whenever one or more land cards are put into your graveyard from anywhere, draw a card

Kefka Palazzo Purphoros, God of the Forge is usually not a very good Limited card

The card quality and tutor effects are simply much more mana efficient so unless the combo deck has alternate uses for the specific draw spell such as a discard outlet or recursion effect it will avoid the latter in preference for the former