They have a simple theme with a couple of strategies to win perfect for learning the game
I also love it on Commanders with toughness and least two bigger than their power just randomly like Ishkanah, which is also good since Spiders often are bigger butts
Your stickers will remain on your cards as they move from the battlefield to your graveyard or exile
It acts as a way to shut down a potential attack, but also allows you to protect your creatures in a bind
As another example, if my opening hand has a one-drop, a two-drop, a three-drop and four different four-drops, then I will usually bottom the worst three four-drops in the hope of drawing into a powerful five or six-drop, while keeping the cards that will ensure a perfect 1-2-3-4 curve-out
Once the ability has resolved, however, the creature can't be blocked even if its power is increased above 2