It depends on what you're buying and why: Whatever you buy, verify the seal
This will get killed before the effects are able to trigger a lot of the time
Read more about Rona: ROSNAKHT, HEIR OF ROHGAHH Rosnakht comes from a long and proud line of kobolds eager to burn, stab, and slash their way across the mountains of the Kher Ridges
When you feel comfortable drafting and building these kinds of ramp decks then you can more profitably start experimenting with other colours and themes
This plays its best roles in go-wide, Proliferate, or artifact creature strategies where ED-E can either be enabled to the extreme, or it can synergize with other effects in the deck
The comparatively high costs of the dragon creature cards can be absorbed well by the high mana count in the deck, further support is provided by the Dragonmaster Outcast, the Dragonspeaker Shaman or the Dragonlords Servant