Brawn and Nylea, God of the Hunt will help you with trample, good for all the good power-to-cost ratio creatures you can have
This approach placed some constraints on deckbuilding as players couldn't include 2-cost or smaller cards in their deck without accidentally cascading into them
Scientists Abandon Hope Abian, Luvion Usurper (playtest) Abolish Absorb Vis Academic Dispute Academy at Tolaria West Acceptable Losses Akroma's Blessing Akroma's Vengeance Alabaster Host Intercessor Alberix, the Trade Planet (playtest) Alexi, Zephyr Mage Amber Gristle O'Maul Amugaba Ancestral Memories Ancient Excavation Angel of the Ruins Anje's Ravager Anurid Brushhopper Anvil of Bogardan Apocalypse Aquamoeba Arc Mage Arcane Subtraction Arm-Mounted Anchor Arrogant Wurm Artificer's Intuition Artillery Enthusiast Ash Barrens Astonishing Spider-Man Asylum Visitor Atemsis, All-Seeing Attunement Aura Extraction Avaricious Dragon Aven Trooper Avenger en-Dal Awaken the Honored Dead Backslide Bag of Holding Balamb T-Rexaur Balance Balduvian Horde Balloon Peddler Balshan Griffin Bandit's Talent Barbarian Bully Barkhide Mauler Barren Moor Basking Rootwalla Battle Plan Battlewing Mystic Bazaar of Baghdad Bebop, Warthog Warrior Bedhead Beastie Bedlam Reveler Behold the Beyond Binding Negotiation Blasted Landscape Blaster Mage Bloated Toad Blood Fountain Blood for the Blood God
One of those colors also likes putting stuff into the graveyard
This means that while a player would require mana to do so, Kels could convert useful sacrifice outlets into card draw
Some cards scale with the number of tapped creature we control (Crash the Party, Harvest Season, Throne of the God-Pharoah) or give tapped creatures special benefits
