The performance by itself isn't that strong, and dragons have the same material designation and level, so the effect is more useful over there, but the ability to revive from true flames is a big advantage, and if you can successfully activate your own effects from a mass deployment
You need at least 7 mana from other sources to net a single extra mana from the Cube, and its usually easier to find an infinite mana combo using ordinary mana rocks than it is to turn this into a reliable engine
The same risk applies to blocking, but the potential to become a big threat might deter incoming attacks altogether
Card Text 2 [Inherited Effect] [All Turns] [Once Per Turn] When one of your yellow or red Tamers is deleted, place 1 [Marcus Damon] from your trash on top of your security stack
Oh, and before we start, this is how I stay connected while Im in Japan quite honestly theres no one else Id go with
Bisharp costs 400 Pack Points to craft