I have a Satyr Hedonist in my BnG Deck 2a it's a filler card is there a better choice card from BnG or Theros ??
Yes, there's certainly better. But it depends on what role you want the slot to fill. If you want the slot to be an aggressive creature, {Kalonian Tusker} is a pretty tough to beat 2-drop for green. {Swordwise Centaur} if you absolutely need to stay in Theros/BotG. If you want it to fill the mana ramp role, {Zhur-Taa Druid} is a champ. {Sylvan Caryatid} is great, and {Votaging Satyr} is pretty solid, too. And there's always the one-drop choices too, like {Elvish Mystic}.
I'm pretty sure he means block constructed.
I'm staying with BnG/Theros it's a really good B/G 40 card deck that I want to master at playing