These creatures all have abilities that can massively impact your board state , forcing your opponents to target them each time they return to the battlefield
NecroskitterNecroskitter can steal infected creatures from our opponents, while Lilianas InfluenceLilianas Influence can lower opposing battlefields' stats and fetch out our Liliana, Death WielderLiliana, Death Wielder, who can snipe anything with a -1/-1 counter on it
I expect these to tank after no one plays them in Standard, which should give you an opportunity to scoop them for next to nothing
SPELLSTUTTER SPRITE This list needed a representative for the sub-category of counter-creatures, and while I could have chosen Mystic Snake for historic precedence or Frilled Mystic for recency, I think Spellstutter Sprite is the most interesting of the bunch
Forcing this horrible choice on your rivals is a fantastic way to whittle their hand down to next to nothing, removing yet more of their options - perfectly devious