Ghostly Flicker does all of those things and more, and its easy to see why that would lend it to being a combo enabler, too
As a land, you can transform it back to Ojer Axonil for three mana if youve dealt at least four damage with noncombat red sources during your turn
Decks could be built in a variety of ways, dipping their toes in token, graveyard, tribal, Voltron (suit up one creature), or Aristocrats (sacrifice creatures for value, a term coined in this block) strategies
By collecting evidence 10, you can play a spell from your hand for free
However, I dont think all three of these are created equal
I could easily see this card staying at around this value for a while given the time-tested nature of cards with similar effects