It might not seem like a fraction of a millimeter makes any difference, but it can really stack up
Unanswered, this rat is bringing a whole army with it, just like Goblin Rabblemaster from back in the day
The slight issue is that you are usually also running a bit of a Reanimate backup and while Corpse Dance and Co
It drains each opponent for each Shrine you have in play
Or you could use cards like Merfolk Looter and pitch big, splashy spells into the graveyard you can flash back for cheap, like Ezuris Predation, Clone Legion, or Insurrection
Due to the nature of how Magic is played, capitalizing on a game mechanic thats bound to happen on every player's turn like drawing cards is always going to be a desirable effect, and can in some cases turn into too much of an advantage or unlock play patterns that dont sit well with the community