Kaito, Cunning Infiltrator Three-mana planeswalkers are often important in Standard environments
It slows down aggressive decks and allows you to pick away at the opposing library

Land (33) 1x Ancient Tomb 1x Blood Crypt 1x Bloodstained Mire 1x Bojuka Bog 1x Cabal Coffers 1x Command Tower 1x Flooded Strand 1x Geier Reach Sanitarium 8x Island 3x Mountain 1x Polluted Delta 1x Reliquary Tower 1x Scalding Tarn 1x Smoldering Marsh 1x Steam Vents 1x Sunken Hollow 4x Swamp 1x Terrain Generator 1x Tolaria West 1x Urborg, Tomb of Yawgmoth 1x Watery Grave Instant (11) 1x Arcane Denial 1x Counterspell 1x Cyclonic Rift 1x Disdainful Stroke 1x Doom Blade 1x Evacuation 1x Hero's Downfall 1x Murderous Cut 1x Reality Shift 1x Swan Song 1x Terminate Artifact (16) 1x Chromatic Lantern 1x Dimir Signet 1x Elixir of Immortality 1x Font of Mythos 1x Gilded Lotus 1x Howling Mine 1x Izzet Signet 1x Lightning Greaves 1x Mindcrank 1x Rakdos Signet 1x Sol Ring 1x Talisman of Dominance 1x Talisman of Indulgence 1x Teferi's Puzzle Box 1x Temple Bell 1x Venser's Journal Sorcery (14) 1x Damnation 1x Dark Deal 1x Exsanguinate 1x Minds Aglow 1x Molten Psyche 1x Past in Flames 1x Reforge the Soul 1x Vandalblast 1x Wheel of Fate 1x Wheel of Fortune 1x Whispering Madness 1x Windfall 1x Winds of Change 1x Yawgmoth's Will Planeswalker (1) 1x Jace Beleren This deck was made after a random general was given to me to build around

Pack Rat The best MTG card in Limited Pack Rat is one of, if not the biggest Limited bomb ever printed
Commander Morophon, the Boundless Changeling (This card is every creature type.) As Morophon enters, choose a creature type
Aggro tends to prey on Control decks, Midrange can outclass Aggros threats, and Control can outlast Midrange