Having access to red offers some versatility with instants like Naya Charm and Chaos Warp, which can help supplement the limited removal that green offers
// Flying While resolving Valefor's first chapter ability, the next opponent in turn order chooses a creature with the greatest mana value among creatures they control, then each other opponent in turn order does the same
You can play Endrek fairly, by rationing your mana out, or not so fairly, by exploiting cards like Grave Pact
Some effects state that an artifact doesn't untap during its controller's untap step
This means that you can very easily break your opponents board and increase yours by amassing as many Orcs as possible which can run over your opponents cards
Throughout Magic: The Gatherings history, green was not known as a color that could interact and kill opposing creatures with regularity outside of combat