From user Gprime (GameFAQs). It's well-known, but for those who haven't seen it yet:
Boost macro
alt+1
/p I call forth, the divine powers of Alanta <call0>
/wait 1
/em begins to lift the rock from the ground with his power.
/wait 1
/p YESSSSSSSSSSS I FEEL THE BOOOST OF POWAR!<call1>
/wait 1
alt+2
/shout CAN YOU FEEL IT VANADEIL? THIS IS TRUE POWER!
/wait 1
/p GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAH<Call2>
/wait 1
/p <Call17>Current power stats:
/wait 1
alt+3
/em power bar [|||||| ] 30%
/wait 1
/em power bar [||||||||||||||||| ] 65%
/wait 1
/em power bar [||||||||||||||||||||||| ] 100%
/wait 1
alt+4
/p NOW GATHER AROUND MY BROTHERANS
/wait1
/p HERE I GO
/wait
/p BOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOSTUUUUUUUUUUUUUUU UUUUUUUUUUUUUUUUUUUUUUUUUUU<Call3>
/wait 1
/ja "Boost" <me>
Alt+5
/p MY NEXT ATTACK WILL NOW DO MORE DMG<Call1>
/wait 1
/em power begins to fade
/wait 1
/em power bar [|||||||||||||||||| ] 75%
/wait 1
/em power bar [|||||||||]40%
/wait 1
/em power bar []0%
alt+6
/p I tried my best, tell me..
/wait 1
/p will i dream <Call10>
/wait 10
/p BOOST MACRO READY
/wait 1
/echo BOOST MACRO READY