This scene itself is impactful as it hearkens back to Tifa's time as a girl growing up in Nibelheim, serious conversations had on the water tower between her and Cloud as kids, and even more conversations had about it as adults
It's even possible for it to be touching one of your creatures and one of your opponent's creatures, boosting your creature and damaging your opponent's
It also provides a major boost to cards with an affinity for artifacts, letting all of your permanents in play contribute to reducing their cost
BREAKthrough (2015) Time to meet BREAK cards , gold horizontal evolutions that added HP and extra moves without resetting the Pokmon
This effectively doubles +1/+1 counters on creatures, which is good, but this equipment can also be attached to planeswalkers, turning them into creatures that can still use their loyalty abilities
Its a great way to convince your opponents to attack each other and ensure the control or ramp player doesnt get out of control