Dimir Murktide (9.1% of the Winner's Metagame) 4 Orcish Bowmasters 4 Psychic Frog 4 Counterspell 4 Fatal Push 4 Polluted Delta 4 Thoughtseize 3 Murktide Regent 3 Force of Negation 3 Preordain 2 Subtlety 2 Sink into Stupor 2 Spell Snare 2 Undercity Sewers 2 Watery Grave 2 Tamiyo, Inquisitive Student 2 Dismember 2 Island 2 Kaito, Bane of Nightmares 2 Darkslick Shores 2 Flooded Strand 1 Swamp 1 Misty Rainforest 1 Marsh Flats 1 Scalding Tarn 1 Sauron's Ransom 4 Consign to Memory 2 Harbinger of the Seas 2 Stern Scolding 2 Nihil Spellbomb 1 Jace, the Mind Sculptor 1 Engineered Explosives 1 Subtlety 1 Mystical Dispute 1 The Meathook Massacre Dimir Murktide stands as the format's premier interactive midrange deck, using a mix of countermagic, discard, and removal to dismantle opposing plans

When players do run five-color decks, they're most often built around specific, powerful creatures and spells that have all five colors of mana in their mana cost - most of which are dragons, such as Niv-Mizzet, and Ramos, Dragon Engine
Did I miss any important ones
New and reprinted cards for Final Fantasy II Final Fantasy IIIs story revolved around the elemental crystals
Grab Felidar Guardian and use it to blink the Guide, who re-enters and reanimates something else, for a simple example
It costs 1 white and 4 generic for a total of 5 mana and has the following text: Hideaway 5 Whenever you attack with one or more creatures, create that many 1/1 green and white Citizen creature tokens