Hekatonkheires

[Big Lez]

When Tribute Summoned: This card can attack twice each turn. Once per turn: You can Tribute 1 Level 5 or higher monster you control, this card can conduct 1 additional attack for each monster Tributed by this cards effect. 

[Nightmare Stomper]

Some OCG then my opinion:

 

2450/2150

 

If this card was Tribute Summoned, this card can attack twice during each Battle Phase. Once per turn: You can Tribute 1 Level 5 or higher monster you control; this card gains an additional attack during each Battle Phase this turn.

 

Opinion:

 

(This card is always treated as an "Archfiend" card.) You can Normal Summon/Set this card without Tributing, but its original ATK becomes 1750 and its Level becomes 6. If this card was Tribute Summoned, this card can attack twice during each Battle Phase. Once per turn, you can Tribute 1 "Archfiend" monster: This card gains 300 ATK and DEF, also, this card becomes unaffected by other card effects. These changes last until the End Phase.

[newhat]

Ten points from Gryffindor for changing the functionality of a card.

 

It's pretty slow, but if you gather 3 Tributes you can drop it, use its effect, and one-shot your opponent. I think. I'm not exactly sure how its effects interact.

[Big Lez]

-I want this card to be Tribute Summoned so i dont wanna have it be another barbaros & co. Card - this would also pretty much wreck the idea of it. And since you'll have to Tribute 2 monsters the 2750 ATK is fair imo. 

 

- The effects are supposed to interact exactly like you thought. The 2 Attacks per turn are a given when this card is Tribute Summoned. The 2nd effect is also possible if you somehow Special Summoned it. 

 

Thank you guys for the replies :)