Relay Soul sounds like a problematic and powerful combination when it can be drawn into, along with you being able to take down the monster, along with your opponent having the incredibly easy scenario of having a monster to Summon, so assuming rulings don't disable it completely (which they could due to the unexplored nature of these effects), I still think it feels wrong to favor it over this
The difference in strategy comes from how you balance your deck
For more information about future releases like this one, maybe you could even consult Rip Hunters Chalkboard
All Wizards did was clean it up and make it cheaper as they wanted to make sure it was good, which they did by changing it from blue to white-blue
Giving your creatures first strike makes them much more likely to survive two combats, or at least trade at a profit, and having your extra combat stapled to a 5-power creature pushes a lot of damage
It should only be used on Gimmighoul , and never on other Pokemon