Look above at the wonderful card before you! Armed, the first half, gives your creature +1/+1 and double strike, which is huge for 2 mana. Then you have dangerous, a sorcery that causes all enemy creatures to be forced into blocking your buffed up creature. Essentially, if you equip this to an already strong creature (An Eldrazi? :O ), you can then make it slightly more than twice as strong and then corral every enemy into a small target that you then annihilate. Does more need to be said? 😀
Thank you for reading, and I hope you have a wonderful day!