Skullclamp, Ashnod's Altar, Denethor, Ruling Steward and other cards also help, but only Ashnod's Altar can activate for free, so it adds another interesting option
In practice, this means casting Drakuseth for six gives you a second Drakuseth for the turn that wont die to the legend rule
It is only weak to bounce effects, but the increment is easy to adjust, and since it stabilizes your follow-up plays with Surveil, it significantly reduces the vulnerability of turns where you have nothing to do
When your opponent controls Sheoldred, the Apocalypse, you will get priority in your upkeep to remove it
Jeskai has gotten close to counters a few times, but this is the first contact with +1/+1 counters and charge counters
If you want to beat me while I stubbornly try to figure out how to master an Ichorid deck, you can post on there