Asymov, The Great Red One

First strike
{1}{r/w}{u/r}: Create an equipment token with
"Equiped creature gains +X/+0 where X is his
power. Equip {3}"
Whenever an equipment enter the battlefield
under your control, you may pay {1}. If you
do, attach it Asymov, The Great Red One.
At the end of your turn, sacrifice it.