Sunstar Lightsmith's ability will count any spells you've cast this turn, which may include Sunstar Lightsmith itself
On the new-card side, Shard of the Nightbringer is the one people want, an 8/8 flyer that drains half a players life when it lands, with Biotransference and Their Name Is Death rounding out the flavor-meets-function picks
Add in the number of useful enchantments which can easily be cycled (including Cast Out, Shark Typhoon, and Decree of Silence), and you can appreciate the kind of power Replenish unlocks
For just one mana, the Doctors mechanical mutt adds a nice layer of protection to all of your other legends, while also giving you the option to slip them through the enemy lines with his activated ability
Of all the colorless spells MTG offers for token protection, this is among the best
I want a big stack of these for when Zombies have their time in the sun again