If you want to learn the Blue/Yellow color pair, Nami is the right starting point
Hit me up on Twitter (Im not calling it X) and give me an earful
Root Elemental gets cut simply for being very expensive for what it does, and Ransom Note is just not a good card
Greater Tanuki Greater Tanuki is a weird one
Dimir Graveyard with Kiora, the Rising Tide 4 Deep-Cavern Bat 4 Faerie Dreamthief 1 Razorlash Transmogrant 2 Aclazotz, Deepest Betrayal 1 Terror Ballista 4 Gnawing Vermin 4 Overlord of the Balemurk 4 Kiora, the Rising Tide 4 Fallaji Archaeologist 2 Chupacabra Echo 4 Wail of the Forgotten 2 Revenge of the Rats 2 Virtue of Persistence 4 Dead Weight 4 Invasion of Amonkhet 2 Liliana of the Veil 2 Jace, the Perfected Mind 4 Restless Reef 4 Darkslick Shores 4 Gloomlake Verge 4 Undercity Sewers 8 Swamp 2 Island 4 Underground River 2 Ghost Vacuum 2 Season of Loss 2 Duress 2 Withering Torment 1 Razorlash Transmogrant 4 Huskburster Swarm 2 Terror Tide Kiora, the Rising Tide is another awesome build-around card from Foundations , seamlessly fitting into a blue-black descend deck
Of course, there are ways around Gengar EXs Energy problem namely Gardevoir EX and, if youre able to do so, it becomes the core of a great Psychic deck many players wont be expecting