I've had a random thought of Turning Silver Sentinel into an Archetype

[Big Bad Pennar]

Sand Sentinel

[EARTH/Warrior/4/1000/1800]

You can Set this card from your hand to your Spell & Trap Card Zone as a Spell Card. During the End Phase of the turn this Set card in your Spell & Trap Card Zone was destroyed by a card effect and sent to the Graveyard: Special Summon this card then add 1 Warrior-Type "Sentinel" Monster from your Deck to your hand

 

Camouflaged Sentinel

[EARTH/Warrior/4/500/1500]

When this card is Normal Summoned: You can Activate 1 Spell/Trap Card from your Deck on your Opponent's Side of the field as if they had Activated that Spell/Trap Card. When a Card effect activates that would remove a Set Spell/Trap Card from the field: Destroy the Set Spell/Trap Cards instead.

 

Obsidian Sentinel

[EARTH/Warrior/4/1800/1000]

You can Set this card from your hand to your Spell & Trap Card Zone as a Spell Card. During the End Phase of the turn this Set card in your Spell & Trap Card Zone was destroyed by a card effect and sent to the Graveyard: Special Summon this card from your Graveyard, then Discard 1 random card from your opponent's hand

 

Mountain Laser Sentinel

[EARTH/Warrior/Xyz/4/2000/1200]

2 Level 4 Warrior-Type Monsters

This card gains 300 ATK for each Set Spell/Trap Card you control. Once per Turn: You can Detach 1 Xyz Material from this card to Target 1 Set Spell/Trap Card your opponent controls; Activate it, regardless of Conditions, with the effect of "Target 3 Spell/Trap Cards on the field; Destroy them"

 

Optical Gillie Cloak

[Spell]

Activate while you control a Face-up Warrior-Type "Sentinel" Monster, During this turn, While you control a Face-up Warrior-type "Sentinel" Monster and a Spell/Trap Card, The effect of all Trap cards activated by your opponent become "Target 1 Spell/Trap Card your opponent Controls; Destroy it"

 

Crossfire

[Trap]

When your opponent Declares an attack while you control a Warrior-type "Sentinel" Monster: Destroy all Set Spell/Trap Cards you control and all Face-up Attack Position Monsters your opponent controls. When this Face-down card is destroyed by a card effect: Destroy 1 card your opponent controls and draw 1 card