This enchanted version of the card depicts Hercules and Meg at the gates of Olympus
A backup creature can target itself instead to get the +1/+1 counters, with no additional effect
Note that this is not a bad card, and it will see play across all eligible formats, but it won't gain the momentum of the past Teferi planeswalkers or their market values
The second cycle came during Kaldheim and are much better because they have basic land types, allowing you to get them with fetch lands or Farseek
If you see a dash on the type line on any given card, then everything to the right of that dash is a subtype
Despite being Plane-locked to Kamigawa, and therefore only receiving new additions in a handful of expansions, the Samurai type has a solid base of creatures to work with