White has a high number of death triggers and self-sacrificing creatures
On average, youre looking at around twelve to fifteen mana from this in the midgame, netting you around ten mana for your troubles
The net result is that threats like Hazoret, Kalitas, [Card]Glorybringer[/Card], and just three-drops with high toughness in general, are surprisingly difficult to bring down and can easily take over the game against an opponent who showed too much respect for [Card]Bomat Courier[/Card]
Once there are just a couple of these effects on board, players could be looking at upwards of 10 damage per turn
"PRB02-008 Marco" plays a crucial role in the late game as well
More broadly, spirits benefit from flying payoffs and cards that work well with fliers