As its status as a massive red dragon would indicate, its a very popular card before and after the reprint
But overall, most of the time I would choose a cheaper answer
Gemrazer Even without its mutate ability, Gemrazer has good value for its mana cost thanks to its power, toughness, trample, and reach
BT15-057 Numemon (X Antibody) When using [Numemon] decks, this card has high board retention from the beginning of the game and its inherited effect can be reused when combined with other cards, allowing this single card to significantly increase the ability to control the entire deck
These abilities can offer players advantages during turns, not just adding stats to cards
Popularity means high submission volumes, which in the past led to massive backlogs (PSA has largely caught up now, but its something to watch during hobby booms)