Both of these Locations don't have a unique ability, but they ease the player into using them by being cheap, ink cost-wise, while also gaining you one lore at the start of your turn, so long as the locations stay on the field
With Sisay being a two-mana-value commander, she seems ideal for an aggressive early-game strategy
And some, like Solemn Simulacrum, do both
30% of Play boosters (but, interestingly, not Collector boosters) have Art cards, and 5% of Play boosters have art cards with a gold-stamped artist signature or Planeswalker symbol
If you get Fall of Cair Andros on the battlefield, any excess noncombat damage you deal to an opponent's creatures will turn into a bigger Army
You build up an impressive board, play Yorion, exile all your nonland permanents, crack your Nevinyrral's Disk or play a wrath of some sort and you should be set up to be able to swing out on your next turn