The shopping behavior around this card doesnt look particularly suspicious, so most likely, Lumras rapid ascent in value can be chalked up to collectors realizing that it was illustrated by the same person responsible for Base Set Charizard
At the heart of Revival Trance is Terra, Herald of Hope , a three-color (white, black, red) commander who mills cards on attack, gains flying, and most importantly lets you pay a small cost (2) to bring back low-power creatures from the graveyard tapped
But Red/White wants to attack, using Equipment and combat abilities - such as Giott, King of the Dwarves double strike - to make it very difficult for your opponent to block
1 See Double
This connive deck features reanimation and discard matters themes
It can promote card advantage, demand an immediate response, and/or provide removal as early as turn 4