If you didn't know occasionally I'll make and post a Sky Striker Metalfoes list, it's usually random but I'll always do one if a new banlist directly effects the deck. This one definitely affects the deck, with the addition of access to a second engage now Sky Strikers have received a huge support as engage is a plus one on activation with the right circumstances, however either way the card doesn't minus you so it's good in every situation it's activated.
If you're curious about the so called synergy this deck has synergy in two points, sky striker's ability to sacrifice a set metslfoes fusion and metalfoes ability to trigger your field spell's on destruction effect.