comet of Karametra

at the beginning of the game this card must be casted from the library, than any opponent can pay {0} and counter this spell; comet of Karametra can't leave the battlefield and can't be the target of spells or abilities
•every land can produce an additional mana of one of the colors that it can produce
•after the draw step if one player has less then 4 card, that player can draw an amount of cards equal to 4 minus the number of card in the hand of that player; the cards drawed this way can't t