Watchwolf

A vanilla beater with no abilities at all, and that absence is the entire point. For most of the game's history, a 3/3 cost three mana with no upside; the gold cost here buys an extra point of toughness off the curve in exchange for needing two specific colors on turn two. That trade is the cleanest statement of a guild's pitch: play both our colors early and we will hand you a body that outclasses anything mono-colored can field at the same cost. The design rewards committed two-color manabases without asking the card to do anything cute, which is why it became a touchstone for how aggressive a gold creature can be at two. The aggressive Selesnya identity it represents (raw efficiency wearing green-white colors, no token-making, no convoke, no lifegain) is rarer than the go-wide builds the guild usually leans on. Bear Cub stats with an extra point in both directions, no text to misread, no decision to make once it is in play: it attacks, it blocks, it trades up against most two-drops. The whole proposition is that a fixed manabase should be paid back in stats, and few cards have made that argument as bluntly.