Its a lot of repeated value when you can constantly hit with a strong creature and draw two cards every turn
There are three First Chapter starter decks in total (Amber & Amethyst, Sapphire & Steel, or Emerald & Ruby), but they all include a pre-balanced and ready-to-play deck consisting of 60 cards using two 'ink' types
People have combined it with pump spells and fling effects in the past, though proliferate is rarely part of the equation
This makes the legendary champion a fantastic card to add to any Steel deck
He also makes Path to Exile way more playable in a metagame where ramping opponents is kinda rough to consider
Because they occur after the creatures have combined into one, the triggers which count the number of times this creature has mutated will count all previous mutations of that mutator, even if the trigger came from the one you just added