Its second ability protects itself and other resource denial pieces in play, and its first ability easily combines with several other cards to strip opponents hands, and keep them empty
11 Damage counters 1 paper playmat 1 paper tracker token 1 Quickstart rulebook 1 Bonus booster pack of 12 randomized cards.
A tapped black source is kinda eh, and Wraith typing is narrow, BUT Granting a creature shadow is very strong
The most obvious one is with Beseech the Mirror, but I am sure there are others out there
Dont attack into their Archangel Avacyn with your Angel of Sanctions unless you have the kill spell, just like you wouldnt attack with other creatures in the same spot
When playing against Burn, try to play it around Skullcrack / Atarka's Command, but keep in mind even if they do negate the life loss, you still get some valuable tokens