Sickening Shoal, Shining Shoal, Frenzied Goblin, Faith's Fetters, Devouring Light, Compulsive Research, Kira, Manriki Gusari, Telling Time and Chord of Calling have all enjoyed time in the cube and a lot of play over the years
the latter is a noncreature spell that will stay relevant at all stages of the game
For six mana, you get a 6/6 with Reach and a 4/4 with major upside
Many names of spells, effects, and items come straight out of a Dungeons Masters Guide or Players Handbook: Lightning Bolt Crystal Ball Fireball Phantasmal Forces Clone Invisibility Fabricate Ball Lightning Erase Fear Misdirection Jump Simulacrum Sleep Web Sunstone Shatter Visions Wall of Fire Wall of Stone Wall of Ice Wall of Sand Wall of Bone Pyrotechnics Ice Storm Reincarnate Descent into Madness Dehydration Brand Chain Lightning Entomb Dominate Animate Dead Teleport Resurrection Raise Dead And then you have similar effects like Phantasmal Terrain instead of Hallucinatory Terrain or Phantasmal Mount vs Phantom Steed, Fly vs Flight, etc
While Grand Master of Flowers is a creature, he is not a planeswalker
The first was used to blend the disguise mechanic with the backdrop of the Ravnica setting
