Ziz, the Skybound Ruler

Each turn, if either Behemoth, the Continents or Leviathan, the Oceans is not on the field, Ziz, the Skybound Ruler is sent back to your hand.
{2}, {t}: Tap all of target player's creatures, and they all take 1 damage.
Each other God card gains this ability while Ziz, the Skybound Ruler is on the field: "{5}, {t}: Deal damage to each opposing creature equal to Ziz,
the Skybound Ruler's toughness."