This red creature only costs two mana, making it the cheapest of the five, but it's the only one that doesn't enter prepared, or can't enter prepared in the right conditions
Declaration in Stone, Stasis Snare, and Reflector Mage are off the table, mostly limiting options to Ob Nixilis Reignited, Planar Outburst, Tragic Arrogance, and back-door Collected Companies as common ways to remove this threat as of the current Standard format
Its super weird that the only one mana Ninja designed to get through so your other Ninja can sneak in is a green creature
When you cast Liliana on the play and edict away an opponents 2-drop, it feels like you cant lose
Oreskos Explorer : Allows you to search for a number of Plains equal to the number of opponents who control more lands than you and put them into your hand
He forces everyone else to discard much like the potent Liliana's Specter