No multicolor cards
You can really go all-in on the explore sub-theme when playing Merfolk, as pairing Hakbal with NicanzilNicanzil, Topography TrackerTopography Tracker, Path of DiscoveryPath of Discovery, Twists and TurnsTwists and Turns and Wildgrowth WalkerWildgrowth Walker is a powerhouse core
Top Ten Best Legendary Dragons Karrthus, Tyrant of Jund Lathliss, Dragon Queen Nicol Bolas, the Ravager Atarka, World Render Niv-Mizzet, Parun Ureni of the Unwritten Miirym, Sentinel Wyrm Tiamat Teval, the Balanced Scale The Ur-Dragon 10
Whenever you cast a green permanent spell, put a +1/+1 counter on each creature you control
It also has an incredibly powerful ability called Bye Bye, Now, that allows you to banish an exerted character with a Strength greater than five when it quests
Saffgor: I wrote this off a bit before, but I think this may be one of the best Pyroclasm-esque cards we've had yet