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] MTG Single Magic: The Gathering](http://www.undiscoveredrealm.com/cdn/shop/products/rhet-crop-spearmaster-amonkhet-mtg-single-magic-the-gathering-311841_1024x1024.jpg?v=1693751508)
