This is a typical leadership card that was panned originally as being an overcosted effect. Make no mistake that if you are playing solo, this card is not great but as you add more players to the game Grim Resolve can be truly epic. When I run a deck with leadership resource acceleration, I always add a couple of copies of Grim Resolve for my multiplayer sessions.
Event. Cost: 5.
Action: Ready all character cards in play.
"If there is only one way, then I must take it. What comes after must come." Frodo Baggins, The Two Towers
Core Set #25. Leadership.