Gate to Ra's Throne

Gate to Ra's Throne enters the battlefield tapped. Each god you control cannot leave the battlefield in any way; if destroyed or exiled,
act as if they were regenerated.
At the beginning of your upkeep, draw a card for each color on god permanents you control.
{1},{t} Pay 1 life : Add 3 mana of any combinaison of color on god permanents you control.