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
Fist of Suns and Jodah, Archmage Eternal Each of these is very good at getting you to alternate cast something for five mana
You can cast only one more
Im presuming that the cards will not get a reprint to go with the unbanning, and if that happens, watch out
This sort of narrative cycling happens in all types of gaming, but its especially fun in MTG
Other cards that will likely be key to such a strategy include Helping Hand, Thought-Stalker Warlock, and Treacherous Greed