Unlike the other two, it has to come from the player's hand and has a low enough Level to Normal Summon without a Tribute
Hand looping (the act of taking a card out of a player's hand and getting rid of it) is incredibly powerful, and The Forceful Sentry has been banned for years
And even though the poll was for the 200-card nostalgia set, lots of these cards were scheduled for the core set, available in multiple rarities, so were going to keep them there in the core set
This can be useful while fighting your opponent.
Unlike Skill Drain, it also destroys itself once it runs out of material, so you dont need to worry about drawing an out for your floodgate
If you keep drawing pots, youre essentially playing with a 34-card deck and a costless hand advantage