For example, if two creatures you control with lifelink deal combat damage at the same time, Aerith Gainsborough's second ability will trigger twice
From PuPu UFO, Goobbue Gardener and Torgal, A Fine Hound through to Ignis Scientia, Prishes Wanderings, Summon: Fenrir and Blitzball, I cant remember another format with so many ways to ramp at two and three mana
Or it can stun your rivals in matches where he gets used
It can catch you up when you are far behind and can answer whatever your opponent has going on
You can use different colors for different decks, but over the long-term people tend to stick to one color for ease
The second Legendary card revealed for Emerald in Rise of the Floodborn, this card has an extremely powerful ability that allows it to be readied whenever an opposing character is damaged