And, yes, you can keep mutating your creatures with more and more mutate spells to your hearts content
Upgrades We're not short of ways to increase the +1/+1 counter output in this deck, but some of the most impactful changes are likely to be if you can identify some big X-spells to include
Urabrask the Hidden is a favorite of mine, and Anger is also great if you build around it (also much easier when adding black to your deck)
Legendary Artifact Artifact (CTRL to add secondary) Creature Aragorn, Company Leader Whenever the Ring tempts you, if you chose a creature other than Aragorn as your Ring-bearer, put your choice of a counter from among first strike, vigilance, deathtouch, and lifelink on Aragorn
Wizards of the Coast (November 25, 2008)