Green mages like Garruk Wildspeaker believe in the inevitable supremacy of nature and its laws. As such, they live by a code where only the fittest will survive, so you better have a tough body, good instincts, and maybe a few strong friends to rely on. That's where this deck comes in.
Many of its creatures have very good stats for the amount of mana they cost; who needs tricky abilities when you have muscles galore? Of special note are "Gloomwidow" and "Sentinel Spider" with the "reach" ability, which helps you defend against creatures with the "flying" ability (which few green creatures have). And the two aces, "Garruk's Horde" and "Regal Force", are not only strong creatures themselves, but also help you summon more of your feral friends faster and run roughshod over your opponent!
With few abilities of their own, though, your creatures will have to rely on your other spells for support. "Prey Upon" and "Hunt the Weak" take advantage of your creatures' raw physical strength to bully weaker opposing creatures into submission; this is especially useful on creatures with annoying abilities. "Nature's Lore" brings more "Forest" cards to the battlefield, giving you access to more natural resources sooner, while "Bramblecrush" offers utility in being able to destroy any card that isn't a creature.
Finally, "Oakenform", "Enlarge", and "Overrun" buff up one or all of your creatures for a final ferocious assault!
https://gamefaqs.gamespot.com/pc/708481-magic-duels-of-the-planeswalkers-2014/faqs/67321
