Like any Continuous Trap, Mind Drain has to be Set in a previous turn to be used, so its benefit won't be immediate
"Symbol of Heritage" and "Goblin Out of the Frying Pan" from Shadow of Infinity
Once you hit the mid game and everybodys traded off some creatures in combat or dealt with a board wipe, Ravos recurs creatures to keep resources flowing into the late game
Buscar la trampa es mas importante que buscar la magia de fusin
Even within the rules of fan-art I listed above: people buying it know theyre buying a proxy, a replicated card (at least, assuming its not someone trying to hock a proxy off as being authentic) the fact that it does use authentic artwork is tricky, and maybe the most grey of greys involved proxies dont interfere with the rights-holders from selling cards because, well, the rights-holders dont get ANY money from the secondary market to begin with
I think sacrificing two artifacts is going to chew up more resources than people realize, and the mana cost on Breyas effect is small but not insignificant