Bazar of curiosity

Whenever an opponent plays a land create a
0/1 egg creature token. Whenever an opponent
casts a creature spell you gain 1 life. Whenever an
opponent gains life add {1}
{t} each player may gain 2 life
{t} each player may play a land
{2}{t} each player may cast a creature spell from
thire hand without paying its mana cost