FlyingFlying is an evasion ability.
A creature with flying can’t be blocked except by creatures with flying and/or reach. A creature with flying can block a creature with or without flying. (See rule 509, “Declare Blockers Step,” and rule 702.17, “Reach.”)
Multiple instances of flying on the same creature are redundant. (CR 702.9)
Other Heroes you control have
exaltedExalted is a triggered ability. “Exalted” means “Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.”
A creature “attacks alone” if it’s the only creature declared as an attacker in a given combat phase. See rule 506.5. (CR 702.83). (Whenever a creature you control attacks alone, it gets +1/+1 until end of turn for each instance of
exaltedExalted is a triggered ability. “Exalted” means “Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.”
A creature “attacks alone” if it’s the only creature declared as an attacker in a given combat phase. See rule 506.5. (CR 702.83) among permanents you control.)