Some of them are outstanding representations of their in-game counterparts, while others just feel awesome to play
Weve gotten 87 Aura cards with flash, and theyre mostly designed for Limited, but thats a great part of the game to be useful to
Having creatures that generally outsize your opponents' also makes it hard for them to effectively attack you
They could fit well as part of the 99 of, say, a Tribal Angel deck
Drag to the Roots Golgari decks excel at milling themselves, so it only takes a little more work to enable delirium to make Drag to the Roots an exceptionally cheap removal spell for its lack of conditions, plus 4 mana to destroy anything isn't a terrible rate in its own right
At first blush, Shadrix appears quite similar to Rankle, Master of Pranks a proven success in Standard aggro and midrange lists