The fairly obvious reason why Esper and Abzan Charm are on this list is because they have two other modes, both quite handy ones at that
Hed turn two Merfolk Traders, turn three Intuition for Great Whale, turn four combo off by Recurring Great Whales into other Great Whales over and over, eventually playing a really big Stroke of Genius for the win
Adding to the frenzy, the game has just launched its latest sets, a combination of Black Bolt and White Flare
Useful way to fill gaps without cash outlay
When you are playing any sort of artifact ramp deck you will simply play every single card you have that is on the top 13 of this list, they are all just so nutty good
You cannot play Sol Ring with Keruga, the Macrosage