Your opponent then has to spend time and resources to deal with the threat so you are coming out ahead on both tempo and value, which is how you win midrange games of Magic
Tailored to Your Tabletop Regular Size: 12.15cm tall Compact and ideal for crowded tables
Furthermore, there are many Commander decks around that already fulfill this deckbuilding cost, essentially making the cost moot
If that creature's power is 2 or less when it enters the battlefield but becomes greater than 2 after the ability triggers, each opponent will still lose 1 life and you'll still gain 1 life
Typically between 12 and 60, depending on the grading company and how quickly you want it done
Additionally, any monsters an opponent summons automatically loses 2,000 Attack points, and if the number then reaches 0, it gets destroyed