Octo-Launcher + Octo-Launcher HL

Octo Launcher
WATER / Level 6

[Fish/Effect]
If this card is tribute Summoned: send the top 3 cards of your Deck to the Graveyard. Only once, while this card is face-up on the field: You can Banish 2 monsters in your Graveyard and Target 1 monster on the field; Destroy the Target. This card cannot attack the turn you activate this effect. If this card destroys an Opponent's monster as a result of battle: Send the top card of your Deck to the Graveyard.
ATK / 2000 DEF / 1500

Octo Launcher HL
DARK / Level 10

[Machine/Fusion/Effect]
Cannot be Special Summoned, except by "Dark-Mechanics - HL". When this card is Summoned: Send the top 5 cards of your Deck to the Graveyard. Up to twice per turn you can Banish 2 monsters in your Graveyard: Target 1 card on the field; Destroy the Target. During the End Phase of a turn in which this effect was activated, send the top 5 cards of your Deck to the Graveyard. Once per turn, this card cannot be destroyed as a result of battle.
ATK / 3000 DEF / 2500

Dark-Mechanics HL
Spell

You can only activate this card if your Life Points are 4000 or less. Tribute 1 Monster: Special Summon 1 "HL" monster whose name includes the Tributed monster's name from your Extra Deck.