Back when you could post comments on Gatherer, the top comment for years running on this card was, R&D had to be high when they designed this. Emrakul, the Aeons Torn is a flying spaghetti monster that cant be countered and has protection from spells that are more than one color
Hypnotize and Improvize are two actions that replace themselves, while Strike a Good Match, Tinker Bell, Pongo, and Lucky all give you card draw while also allowing you to filter your deck and select the optimum card for each situation
There are plenty of fun extra sets in Magic: The Gathering with the Mystery Boosters some of the absolute best to open, draft, and play with
Doubling the mana produced by your islands enables some incredible turns, especially with effects like Turnabout and Time Spiral
It's a fun and different take on artifacts than good ol' Brago will be next
If Gau is no longer on the battlefield when its last ability resolves, use its power as it last existed on the battlefield to determine how much damage the ability deals