Phyx Growth

Pay 1 life and discard a card: Look at the top two cards, put one into your hand the other into you graveyard and add a growth counter on this.
If there is a growth counter on this, gain a life.
If there are 10 or more growth counters on this, each player chooses 20 cards form their library and puts the rest in their graveyard. The players shuffles to those 20 cards. Remove all growth counters from this.