Pair these with some choice enchantments and you have the makings of a potent deck in a 60 card or commander format
Plague Sliver, a rare so bad that its still just fifty cents despite only being printed once, in Time Spiral
Look, Im not going to spell out what a corner is, just know that its a key element that graders look at when evaluating cards
When the opponent realizes youre playing the card, they know to save their Sabrina and Zoroark could lose its primary advantage
If this has happened once already in a turn, you can double the number of +1/+1 counters on that creature
With two or more influence counters, opponents risk taking heavy damage from not allowing the card draw, plus this deck already wants those big creatures in the graveyard anyway