It is an interesting card with a unique effect, and it is actually very powerful right now, given the presence of the Elemental Incarnations or cards like Archon of Cruelty or Urzas Saga Tokens
I've designed a lot of mechanics over the years, and flashback is my favorite
#4: Nature's Rhythm Deck Inclusions: 109,080 decks (4.09%) Nature's RhythmNature's Rhythm will fetch you whatever creature you're missing at the time, provided you can pay enough mana
Rainbow Foil Burst A fan-style full-art monster trading card illustration with a dynamic creature leaping toward the viewer, edge-to-edge composition, iridescent rainbow foil reflections, glossy holographic sparkles, dramatic rim lighting, vivid magenta cyan and gold palette, polished collectible finish, clean negative space for card text, portrait orientation, ultra detailed anime-inspired rendering
The game plan revolves around getting as many elves as possible into play and capitalizing on them before you inevitably lose them or win the game
On Zendikar, mana works in ways never before experienced