It's an incredible pump effect, and because it's attached to a creature and not an Instant or Sorcery, you can find it using green's excellent tutor effects
You'll see how the foil covers everything except the art frame
The first aims for an inexorable long game, carefully timing blink spells to safely reuse ETB effects, often countering single target removal or turning evenhanded board wipes into events where you come out far ahead of the rest of the table
Standard: Only cards from the latest block can be played (typically, cards from the last 2 years)
More aggressive decks might make use of the Tomb of Annihilation, since it drives down both players life totals and resources with the rewards of a 4/4 with deathtouch at the end
Steve is taken from the first letter of each word (Ste) and, since that was close enough to a real name, the community decided to give him a "proper" name, and thus the Steve nickname was born