Well Harbinger of Night has an ability that puts -1/-1 counters on every creature at the beginning of your upkeep
Skyhunter Strike Force was added as a Set Booster exclusive for Phyrexia: All Will Be One Commander
While Endless Swarm can be a fun Hail-Mary pass in a deck driven by Seshiro the Anointed, Jetmir, Nexus of Revels, or other swarm (Beastmaster Ascension, Collective Blessing) and/or token (Parallel Lives, Annointed Procession, etc.) synergies, everything rides on your army surviving
Not great, not terrible, just okay
Price of Glory keeps your opponents from casting their removal on your or anyone elses turn other than their own, giving you the freedom to cast your spells or attack without the risk of a counter or instant speed shenanigans