There ain't no Rocks

Igneous Bastarcite
Level 4/EARTH
1450/300
[Rock/Effect] When this card destroys an opponent's Level 4 Effect Monster in battle, select 1 Rock-type Monster in your Graveyard and add it to your hand. Level 3 and lower Monsters that attack this card gain 400 ATK during the Damage Step only.

Monopolith
Level 3/EARTH
800/1150
[Rock/Effect] FLIP: Special Summon 1 "Monopolith" or Level 3 or lower Rock-type Monster from your deck.

Obsidian Gargoyle
Level 5/EARTH
1800/1200
[Rock/Effect] When this card is Tribute Summoned, your opponent discards 1 random card from your hand. When this card is destroyed and sent to the Graveyard, add 1 Rock-type Monster from your deck to your hand (if it is a Level 5 or higher Effect Monster, discard 1 random card.)

Igneous Bastarcite is ok but y u h8n on lvl 4s ?!1 D: D:

Monopolith has a hotel on boardwalk (it's good)

Obsidian Gargoyle is quite alright. It's a slow, conditional +0 so yeah. Goody!