In the Hydra's Wake

(As this saga enters and after your draw step, add a
lore counter. Sacrifice after III.)
I - Creatures with power or toughness 3 or less
can't block this turn.
II - Distribute X +1/+1 counters among
creatures you control, where X is the greatest
power among creatures you control.
III - Draw a card for each creature you control
with power or toughness 4 or greater.