Links in the Chain

As long as a creature you control with a +1/+1 counter has First Strike, each other creature you control with a +1/+1 counter has First Strike. The same is true for Double Strike, Vigilance, Deathtouch, Reach, Trample, and Lifelink.
Remove X +1/+1 counters from among creatures you control: Gain X life.
A link does not bend; shattering under pressure. As a whole, the chain is as fluid as the western sea.