Its basically a supped-up landfall card that provides universal value for playing the game
According to the official stats, Grixis Twin, Affinity and Jund are all topping the metagame with around 10% of the field, but a full 15+ archetypes make up the rest of the field, including Merfolk, Naya Burn, R/G Tron, U/B Faeries, Goryos Vengeance and Amulet Bloom
The backside of these cards then rewards a payoff for achieving the objective
Keep in mind that there was a very short period of time to obtain Umbreon Gold Star , and point income was very low unless you attended every single event
A creature with first strike will deal its combat damage before a creature that doesn't
They are also all combat-oriented, and specifically as an attacker, which is awesomebecause there are so many disincentives for attacking in Commander, I love to see mechanics like this that support entering combat