All you need is to make sure that youre putting counters on things, whether thats Creatures or Planeswalker, or even Poison counters on opponents, and you can make the most of this incredibly powerful ability
Multiple finality counters on a single permanent are redundant
// Creatures you control get +1/+1
A 'power 5' themed deck could take a twist of just running creatures that meet that criteria, with cards like: Terastodon Archetype of Endurance Ruric Thar, the Unbowed Spearbreaker Behemoth 8 Arna Kennerud, Skycaptain Master At Arms The Human Knight Esper Arna Kennerud, Skycaptain is an absolute powerhouse that doesnt require any fancy combos or game changer cards, instead, you can just beat face with a very strong creature and a ton of auras and equipment
Abilities like Reckless however, dont specify that you have to challenge a character to benefit from it, so a Reckless character could choose to challenge a location instead - or may be forced to