Even better, it asks you to sacrifice the creatures you put counters on, which opens you up to lots of nonsense with The Ozolith
On the other hand, if you plan on building your own deck and strategy and just want some solid cards you can use in it, go with Amber/Emerald
(To mill three cards, a player puts the top three cards of their library into their graveyard.) 4 //// Lazotep Convert Creature Zombie 4/4 You may have Lazotep Convert enter the battlefield as a copy of any creature card in a graveyard, except it's a 4/4 black Zombie in addition to its other colors and types
Thinking about it, he'd be perfect with the new Omen dragon cards from Tarkir Dragonstorm
This article will go through the basics of building a deck: choosing a commander, establishing a theme, optimizing mana curves, and other important tips