Only then, so you cannot play sorceries or permanents without flash that's another break
An example is Summon: Shiva, which plays like a normal Saga, starting with an immediate effect and getting a lore counter each turn, before getting sacrificed after the last one is placed
The enchanted version of the card features Baymax hanging out with a little butterfly, which is gently landing on his finger
Chuck something big in your discard, then play Chip N Dale Recovery Rangers, Maleficent Monstrous Dragon, or Triton Champion of Atlantica to stay on theme
You lose the card draw, but you protect all permanents you control with counters, including planeswalkers, and you tack on a free proliferate