The only good magic is Christian magic - i.e. rooted in Christianity and arising from it; but I have often said that traditional 'ritual' or 'ceremonial' magic is inappropriate and ineffective for these times; because it depended on a passive, immersive Original Participation type of consciousness, that has (all-but) disappeared (at least in The West, among adults).
We are now in an era when Final Participation is the proper way for us to engage creatively with the world - and Final Participation is a consciously chosen, individual activity - done in the realm of 'primary thinking' (a.k.a. heart-thinking).
Yet thinking may be aided by particular activities, and this is where the 'magic' (broadly conceived) comes-in.
Ritual magic was done using formal ceremonies, words and artifacts; usually by groups; after training; and according to pre-arranged timetables.
But now, magic ought to have a different form (I would say is destined to have a different form): a very different form, that I propose to call Intuitive Magic.
Intuitive magic depends on intuition, which is individual (not groupish); and cannot be ordered nor elicited on-demand; therefore it must occur spontaneously, in response to the arrangements of divine providence.
It is a matter of the individual being aware of possible situations emerging (such as synchronicities and unexpectedly striking stimuli), alert to such clues and implications; and being correctly orientated, from a basis in Christianity.
To amplify; I personally am not able to attain intuitions of the form "What should I do?", but will only receive answers to questions of a dichotomous form, such as: "Is this right (or wrong)?" or "Should I do this (or not)?" or "Should I proceed with my plan (or not?)".
Therefore, when an intuition arises, it must be cast into a Yes/No form; and the second test or check, is to seek guidance on the validity of this specific formulation.
When a clear and self-validating answer comes, the process is complete; although it may be repeated as often as seems necessary to generate sureness.
When an answer to this intuitive check is not clear despite genuine commitment to seeking it - or is not forthcoming at all - this is because the question has been incorrectly formulated; being insufficiently precise or rooted in false assumptions. More 'work' is needed.
Thus, if intuitive Christian magic is regarded as things we might do - material things such as words, actions, meditation, or anything else - to attain goals compatible with the divine will; then a major pre-requisite is patience.
Ritual magic is done to a timetable; but intuitive magic takes as long as it takes for the individual to be in the right frame of values and mind, awaiting correct intuition, and for providence to arrange circumstances to make it possible.
Patience, in turn, requires trust; trust in God's personal loving concern for us our-selves, eternally; and trust in God's creative power - that in a world of beings with free agency and whatever the operations of evil: sooner or later the situation will be made to arise in which intuitive magic can be done.
What then, is this 'intuitive magic'?
Subjectively and temporarily, it is experienced as a positive change in consciousness.
But objectively and eternally; it is the operation of our personal creativity in this mortal life, adding to God's creativity: it adds our own creative contribution to the ongoing divine: is an instance of co-creation.