Serious event question

[Baby Vegeta]

Can your opp. use your events that are in play? Events like world martial arts tourney says earth warriors get +1/+1 if my opp has an earth warrior does he get the bonus to?

[Priest]

Can your opp. use your events that are in play? Events like world martial arts tourney says earth warriors get +1/+1 if my opp has an earth warrior does he get the bonus to?
Yes since it says earth warriors get +1/+1. It doesn't say your earth warriors get +1/+1.