If is use a {hearth charm} on my {mirran crusader} can I boost his power after it resolves and he still be unblockable?
Yes you can
Coolio. Thanks.
If you mean use both the charms boost and unblockable clause, then no.
If you mean use the charm to make it unblockable and then use something else like {giant growth} to boost it, then yes
Well not giant growth because he's pro green but something similar that's either white red or blue. But ya, I hear ya and thanks for the clarification.