20-21 HCP and a balanced hand and can do this with 5 card Major
If bidding went 2c-x-2NT it shows 22-23 HCP
3♣ - Puppet Stayman
3♦ - Transfer to ♥
- If it is a transfer then raise one level more interest in slam than a Texas transfer
3♥ - Transfer to ♠
- If it is a transfer then raise one level more interest in slam than a Texas transfer
3♠ - Minor suit Stayman at lest 4-4 in the minors no major stopper
3NT - Game likely no 3 card major
4♦ - Transfer to ♥
4♥ - Transfer to ♠
4NT is quantitative for NT