Assuming you do a little bit of setup (easily achieved with access to greens ramp and blacks tutors), you can have some protection spells ready with Swiftfoot Boots, some Impact Tremors-like effects, and some sacrifice synergies like Blood Artist and Mayhem Devil to maximize the damage those Kobolds deal on the way in and on the way out
Damage that a creature with infect deals doesn't result in damage being marked on a creature or a player losing life
Although higher numbers of Endurances are found in sideboards than in the maindeck, I wouldnt be surprised if decks include more Endurances maindeck already considering how much flexibility this card gives
While there is something to be said for having several low-cost characters on the board, it will be hard to challenge any powerful opponents
You almost never get to ultimate level, but it's there if you want
Different printers use different safe margins, but the principle is consistent: dont park your most important details in the danger zone