"but this also means that the bare minimum cost for staying current enough to be competitive is to buy a $85.99 box of magic cards every four months." Or enter those deck building tournements where all players get randomized cards, and you must put a deck together to play
It draws you cards and makes tokens, all while being a Zombie itself for synergy reasons
However, while Ruric Thar is heavily dependent on the spells being cast by your opponents to be of specific types, Omnath's ability is based off of the cards that you cast, putting its triggers entirely within your control
Deoxys, while not a main attacker in the deck, will have to be used to attack occasionally
These cards exist outside the game and cant be interacted with like normal Magic cards, since they are not considered permanents
With this Magic: The Gathering Starter Commander Deck Draconic Destruction (Red-Green), battle opponents with powerful creatures and spells