You may exert Rhet-Crop Spearmaster as it attacks. When you do, it gets +1/+0 and gains first strike until end of turn. (An exerted creature won't untap during your next untap step.)
"In the afterlife, I'll have no need of sleep. And until then, I have no time for it!"
![Rhet-Crop Spearmaster [Amonkhet] | Jack's On Queen](http://jacksonqueen.ca/cdn/shop/products/3fcfc2d3-8719-4ba1-b4c5-b2f8f6bab634.jpg?v=1569473658)
