The way it interacts with [casthaven]Consecrated Sphinx[/casthaven] is a bit unfortunate, but everything about [casthaven]Consecrated Sphinx[/casthaven] is unfortunate
This includes cards like Amnesia, Guilt Demon and Keeper of Secrets
The other cards that use this mechanic have been less than impressive, likely relegated to Limited
Sephiroth, Fabled SOLDIER / Sephiroth, One-Winged Angel Blood Artist is the gold standard for sacrifice payoffs in Magic, so a legendary one makes perfect sense
Ramp into massive colorless finishers like Graaz, Unstoppable Juggernaut and Threefold Thunderhulk thanks to Ultima, Origin of Oblivion's ability to double our colorless mana
For the players who want even more style on their lands, poster Stellar Sights lands are the pinnacle of galactic glamor