You can force an artifact and steal a creature, or vice versa, without any issues
Invasion of Theros is a battle that can tutor gods, among other card types, and transforms into Ephara, Ever-Sheltering if the battle is defeated
When a Normal, Quick-Play or Ritual Spell Card, or a Normal or Counter Trap Card, is activated, it cannot be returned from the field to the hand or Deck during that Chain unless it has an effect that would cause it to remain on the field after activation, such as "Swords of Revealing Light" or "Kunai with Chain" (unless a card effect specifically permits it, such as "Goblin Out of the Frying Pan")
Use the Young Hero Role to buff your creatures as others go on an Adventure
They aren't quite the towering beasts that appear in the anime, but the 3D models are well-detailed, and at a few inches tall are easily recognizable