Its trashable

Acidic Soil Avenger of Zendikar Bioengineered Future Blackblade Reforged Blanket of Night Bountiful Harvest Branch of Boseiju Brass's Bounty Bumi, Eclectic Earthbender Cleansing Coastline Marauders Crystalline Armor Culmination of Studies Dingus Egg Drain Power Drown in Filth Dune Chanter Dune-Brood Nephilim Earth Surge Elsewhere Flask Eluge, the Shoreless Sea Emergent Sequence Equipoise Eumidian Wastewaker Every Dream a Nightmare From the Ashes Garruk, Primal Hunter Gerrard's Verdict Gerrymandering Great Divide Guide Hazezon Tamar Herald of Leshrac Joyous Respite Knight of the Reliquary Krenko's Buzzcrusher Land Equilibrium Lightstall Inquisitor Lluwen, Imperfect Naturalist Mana Flare Mana Seism March from Velis Vel Michelangelo, On the Scene Multani, Yavimaya's Avatar Nahiri's Lithoforming Naya Obsidian Charmaw Omo, Queen of Vesuva Orcish Squatters Avatar Ore-Scale Guardian Patient Rebuilding Phabine, Boss's Confidant Power Surge Pygmy Hippo Rain of Filth Rampaging Brontodon Rumbleweed Shimmer Stench of Evil Strata Scythe Tazeem Tectonic Reformation Terraformer Tsabo's Web Urborg, Tomb of Yawgmoth Vision Charm Walker of the Wastes Wave of Vitriol Worm Harvest Yavimaya, Cradle of Growth Yuma, Proud Protector Zanarkand, Ancient Metropolis Zanarkand, Ancient Metropolis

Cards related to "Cetitan".
Whenever an opponent targets a card with ward with a spell or ability, the spell or ability is countered unless that player pays its ward cost
Once a Pokemon is knocked out, that player puts it and all cards attached to it in the discard pile
Omnath, Locus of Creation fits especially well in Yorion and/or Risen Reef decks of which there are a few in the current metagame, and since these decks also play pitch-elementals (Solitude, Fury etc.) drawing multiple copies of a legendary card like Omnath, Locus of Creation also ends up serving other purposes