Many Spellslinger decks look to cast several cheap spells, so these creatures that reduce the cost of them seem like a great addition, right
Lord Skitter, Sewer King This is Rabblemasterish, although the tokens not having haste generally makes them less Rabblemaster tokens and more Ophiomancer tokensand usually those arent as good as they look
While this direct damage is nice, Omnath allows each land you play to provide additional value, as whenever a land enters the battlefield under your control, you can buff an Elemental you control with a +1/+1 counter even drawing a card if you've accumulated enough land
Just gaining 1 life or scrying triggers the chain
For eight mana you get three cards, three life points, and a 6/6 evasive threat