There are so many cards in Aether Revolt and Kaladesh that have great enter the battlefield triggers that you will be able to repeat thanks to Felidar Guardian
Cool creatures are the order of the day here, with the cactaur referencing the series' early name for them, sabotenders
When R&D hands off a file to editing, the card codes are always consecutive, but R&D has come up with a few two-digit codes that mean additional things
On its summon, you can choose to essentially active a Dark Hole that destroys not just Monsters, but Spell and Trap cards as well
While an opponent is unlikely to purposefully destroy the card, Fire Hand can destroy itself by attacking an opponent's monster with a higher ATK than it, which still makes the effect activate
Besides fueling some combos that require lands, the best way to maximize this card is with Crucible of Worlds and similar cards so that you're playing those lands no matter what