Discworld

Indestructible
Offler is not a creature unless its belief count is at least four.
Whenever a creature or land card is put into your graveyard, put a 1/1 white and blue bird enchantment creature token with flying onto the battlefield.
If you would draw a card when your library has no cards in it, instead, shuffle your graveyard and hand into your library and draw seven cards.

Indestructible
Blind Io is not a creature unless its belief count is at least five.
When Blind Io enters the battlefield, gain control of up to three target legendary permanents.
Legendary creatures you control get +1/+1 equal to their belief count.