Good old Dynamite Blast finally gets an upgrade. The changes from the original are:
• Minus 1 to resource cost
• Added icon
• Doesn't provoke attacks of opportunity
Given the advent of Stick to the Plan it can be invaluable to get a decent selection of tactic cards. It could even be worth forgoing the 0 XP version entirely and then buying this only once it can start attached to that asset. Guardians are often strapped for resources and making a card cost fewer is often seen as XP-worthy, as evidenced by Leo De Luca.
Whether this card ends up being worthy of your time comes down to whether or not the ability to bypass opportunity attacks does anything for you. If nothing else it makes playing "Let me handle this!" and On the Hunt much more viable while already engaged with other enemies, whereas previously that would be a bad line of play because doing so turns off your Machete.