HP doubling spell

[choongmyoung]

idea: turtle shield and dusk is like doubling his HP unless it's destroyed.
what if there is a spell that doubles your HP?
cost and element?
sure it should cost much more than 6│4 because 1. it does not occupy the shield slot 2. thus not destroyed. And certainly cannot jump over max HP.
or is this just bad idea? ( maybe we dont need any stall card more)

[Absol]

Compare Heal and Miracle.
Heal = 20 HP, 3
Miracle = full HP (-1 to prevent EM of course, but you know what i mean), 15

[furballdn]

Heal is 3|2 for 20hp
If you want something like 6|4 , you should aim for somewhere around 40~ hp gained.

1. This would be balanced if used when the user has around 40hp only.
2. Will this be balanced with all the max-hp increasers and miracle?

If you were to balance around miracle, this would probably cost around 7|6 , but remember that miracle also drains all left.

[choongmyoung]

hard questions.
as ratio with heal.. miracle is around 100│120hp heal.
may can think about that way.