If you want to stack the top of your deck for 2CMC without wasting a card to do it, there's Diabolic Vision, but the 1CMC Preordain and Ponder are worthy as well
P - Alloy Hammer 60+ If this Pokmon has any Metal Energy attached to it, this attack does 120 more damage
Similarly, Berserk Dragon, note which is listed on the main game's Awesome but Impractical page, did see ladder use with Sacred Phoenix of Nephthys due to how easy it was to get out at the time and send to the Graveyard, note providing a powerful 3500 ATK beatstick to close games quickly
Well, other than the fact that using only the lowest level of Digimon means Hacking and some other cards always work, it also guarantees the Level Balancer card always works
This card searches for it or any other card related to it upon activation, plus it prevents other Special Summoned monsters from attacking right away