Paul Church, Mad Scientist

Xenomorph creature spells and their effects cost {2} less to cast.
Every time a Xenomorph creature enters the battlefield, add a research counter on Paul
Church, Mad Scientist. On your turn, you can
choose to remove research counters to do the following—
• Remove a research counter, Xenomorph
creatures you control gain a +1/+1 counter.
• Remove two research counters, draw a
card, then scry 1.