Attribute Summoner

These are a series of monster's who when they're destroyed by battle and sent to the graveyard allow the player to summon a monster with less than 1500 ATK with a given Attribute including a copy of itself. A list of the following monster's and the attribute they summon:
Shining Angel = LIGHT
Mystic Tomato = DARK
Mother Grizzly = WATER
Giant Rat = EARTH
UFO Turtle = FIRE
Flying Kamakiri 1 = WIND

Uses to Archetypes

Since there is no level restriction, Mystic Tomato can summon summon very powerful DARK monsters like Yubel or Earthbound Immortal Wiraqocha Rasca (though it will only have 100 ATK), You can also summon The Dark - Hex-Sealed Fusion to sub for a fusion material.

Since both WIND and FIRE monsters have level 4 tuners with less than 1500 ATK (Top Runner and Flamvell Magician) both Flying Kamakiri and UFO Turtle are good to build a Synchro Deck around.

Shining Angel can summon Manju of the Ten Thousand Hands making it useful in Ritual Decks. It can also summon Honest which can return itself to your hand.

Mother Grizzly is good in Ice Barrier decks.

Giant Rat can summon Ancient Gear Engineer which is a level 5 monster and Castle Gate a level 6 monster meaning it could be useful for Xyz Summons.

Related monster(s)

Masked Dragon is similar to the Elemental Summoners, but it instead Special Summons Dragon-Type Monsters.