One Heart - Two Hearts! Michaels is used over an opponent's opening suit bid.To use Michaels, the overcaller makes a direct Cue bid - a bid in the same suit as the right hand opponent -- when RHO opens (but not when RHO overcalls).
Michaels shows two 5 card suits, depending on the opening bid:
Michaels over a 1 Club or 1 Diamond opening shows both majors.
Michaels over a 1 Heart or 1 Spade opening shows the other major plus a minor.
N E S W
1§ 2§ . . . Michaels. (Not alertable)
North
East
ª AQ
ª KJTxx
© xxx
© KQJxx
¨ Axx
¨ x
§ Axxxx
§ Qx
As you see, any 3 Spades or Hearts in West's hand plus an odd Queen or King or Ace will enable E/W to make a lot of tricks in Hearts or Spades.