Removing a creature is pretty potent, so the design team decided to make it a one-time thing and turned it into an enters-the-battlefield trigger
Equipped creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, draw a card, then discard a card." Equip Equipped creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, draw a card, then discard a card." Equip Artifact - Equipment Aveline de Grandpr Deathtouch Whenever a creature you control with deathtouch deals combat damage to a player, put that many +1/+1 counters on that creature
Penelopes never-ending funeral shroud in the Odyssey comes to mind, as does the poison-soaked robe Medea uses to kill Glauke in Euripides version of her story
Kelermorphs are deadeyes with their Liberator Autostubs, and Ghyrson Starn here is known far and wide as a hero
When cards like that are as highly played as they are, Im willing to give up some raw power to make sure the job is taken care of