Every one of the price shifts started just after Wizards of the Coast announced it was taking over management of Commander from the RC
Originally, it would destroy all Monsters on your opponent's field and in their hand with 1500 or more ATK, then destroy any Monster they drew with 1500 or more ATK for the next three turns after it activated
Then, if it was "Slash Draw", send it to the GY, and if you do, destroy as many cards on the field as possible, then inflict 2000 damage to your opponent for each card destroyed and sent to the GY by this effect
What to Look for When Buying CGC Cards For the first few years that CGC Trading Cards and CSG operated separately, both companys cards used a similar grading color scheme that it uses with its comics and other collectibles: blue for universal items, green for qualified (meaning those with significant defects) items, yellow for its autographed signature series (which refers to signings witnessed by a CGC grader at in-person events) and gold for certain items CGC considers pedigree, with some slight variations here and there
While Infect deals damage in Poison Counters to players, it also translates damage to creatures in the form of -1/-1 counters, which explains Meliras second ability