Selfless Spirit Selfless Spirits primary charm as a protective spell comes from your ability to recur it
It featured in some of the earliest decks in the game, it was a pivotal piece of the Sligh deck which essentially acted as the foundation of the mono red aggro archetype, and its presence has been significant in Modern from the first day of the format as it has featured in many of the formats best decks from Zoo to Splinter Twin to Jund
While Batterskull has long been the best friend of Stoneforge Mystic, the printing of Kaldra Compleat added an even deadlier threat to the Artificers toolbox
You then flashback Unburial Rites straight from the graveyard and lock up your opponents main color
I also like to keep things as inexpensive as possible, and definitely skew to the more casual side of game play
Oh and couldn't find Jorn, God of Winter Flip or Svella, Ice Shaper just looking for 3 mana legendary green creatures, unless I add in 'legendary snow creatures' which makes it feel like I'm expected to know snow creatures before actually looking for them