I was about to say that the amount and power level of planeswalkers and wraths probably scale the most when adding stuff against aggro
Ossification is hyper-efficient, Sheltered by Ghosts is great for aggressive decks, and Imprisoned in the Moon and Song of the Dryads turn bomb permanents into lands

Full Decklist Abrade Adeline, Resplendent Cathar Ainok Strike Leader Angel of Invention Arcane Signet Aron, Benalia's Ruin Bastion of Remembrance Battlefield Forge Beetleback Chief Bitter Triumph Blade of Selves Bojuka Bog Bone Devourer Canyon Slough Castle Ardenvale Castle Embereth Caves of Koilos Chittering Witch Clifftop Retreat Command Tower Commander's Insignia Deadly Dispute Divine Visitation Dragonskull Summit Eliminate the Competition Emeria Angel Exotic Orchard Fellwar Stone Fetid Heath Gix, Yawgmoth Praetor Goldlust Triad Goldnight Commander Grand Crescendo Grenzo, Havoc Raiser Hero of Bladehold Hour of Reckoning Idol of Oblivion Infantry Shield Ironwill Forger Isolated Chapel Kaya, Geist Hunter Legion Loyalty Legion Warboss Lightning Greaves Lingering Souls Loyal Apprentice Mindblade Render Morbid Opportunist Mountain (x5) Myr Battlesphere Neriv, Crackling Vanguard Nomad Outpost Ogre Battledriver Ophiomancer Path of Ancestry Plains (x5) Redoubled Stormsinger Release the Dogs Selfless Spirit Shadow Summoning Shattered Landscape Shattered Sanctum Siege-Gang Commander Skullclamp Smoldering Marsh Sol Ring Solemn Simulacrum Stroke of Midnight Sun Titan Swamp (x5) Swords to Plowshares Talisman of Conviction Talisman of Hierarchy Temple of Silence Temple of Triumph Tempt with Vengeance Terramorphic Expanse Thalisse, Reverent Medium Tocasia's Welcome Twilight Drover Vault of the Archangel Viscera Seer Wayfarer's Bauble Will of the Mardu Windbrisk Heights Within Range Yahenni, Undying Partisan Zurgo Stormrender Temur Roar Temur love two things: big mana and bigger spells

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Learning to sideboard effectively is a skill that develops with experience, but simply having a plan for the top decks in the metagame will give you a significant edge
This card shows that mana dorks that cost two mana usually tap for one mana on their own but offer some additional benefit