Calvin & Hobbes

When Calvin & Hobbes enters the battlefield, search your library for a card and add it to your hand. That card gains the abilities 'This card can't be countered' and 'This card is indestructible' permanently.
Whenever Calvin & Hobbes attacks, choose one:
- Create three Treasure tokens.
- Scry 3.
- If Calvin & Hobbes is still on the battlefield at the end of combat, return it to your hand."
"I'm not arguing, I'm just explaining why I'm right. - Calvin"