I hope you're enjoying the look back
Because card designs usually treat sacrificing as a cost rather than a payoff in itself, they are far less likely to include additional limitations on how often an ability can be used, and youre more likely to get valuable resources (mana, cards, other permanents) out of the exchange
In the early game, this steady stream of fliers gives us chump blockers to slow down our opponent's offense and buy us time to set up our overwhelming late game
Stop them
It also gives you a food token, which is always nice
Uurg, Spawn of Turg Uurg, Spawn of Turg now uses erratad surveil text on its first ability, but its an imminently fair card, given its restrictive mana value and the work you have to put in to make it a 2/5 or bigger