Ashcloud Phoenix is great in any deck built around those types of mechanics, because unlike most Morph creatures it can go back and forth between being face up and face down
Its controller creates a 3/3 green Elephant creature token
Abilities that care about cards being sacrificed is one option
"I think it will become more and more valuable," he said
If you aren't familiar with Magic (which is entirely reasonable given that we cover multiple card games on the site and there will be readers that don't particular about some of the games we cover), then the big deal with this card is the fact for 10 years, the ability simply couldn't be utilized under any circumstance at all
If that's not doable, throw in a big indestructible attacker, like Purphoros, God of the ForgePurphoros, God of the Forge or Darksteel ColossusDarksteel Colossus, and you basically have the game in the bag