Needing the same type of energy card for two or three different tactics can really overload one's opponent and leave them stretched for resources as well as keep them on the defensive
It's a sticking point with Akiza and it isn't until much later during the Dark Signer arc that they resolve their issues with each other

Act of Aggression Act of Treason Amped Up Angrath, the Flame-Chained Awaken the Sleeper Beguiler of Wills Besmirch Binding Grasp Bloody Betrayal Blue Sun's Twilight Bond of Passion Callous Oppressor Captivating Crew Captivating Vampire Caught Red-Handed Chamber of Manipulation Claim the Firstborn Coercive Recruiter Connive // Concoct Connive // Concoct Conquering Manticore Control Magic Cunning Bandit Cunning Bandit Cytoplast Manipulator Dominate Dominating Vampire Dragonlord Silumgar Edea, Possessed Sorceress Eldrazi Obligator Enthralling Victor Entrancing Melody Eriette's Tempting Apple Evangelize Evil's Thrall Exert Influence Firbolg Flutist Flayer of Loyalties Furnace Reins Garland, Royal Kidnapper Geyadrone Dihada Glen Elendra Goatnap Grab the Reins Hammer Helper Helm of Possession In Thrall to the Pit Incessant Provocation Infernal Denizen Involuntary Employment Kari Zev's Expertise Keiga, the Tide Star Keldon Overseer Kellogg, Dangerous Mind Legacy's Allure Limits of Solidarity Loki's Scepter Lose Calm Lullmage's Domination Malevolent Whispers Mark of Mutiny Mascot Interception Mass Mutiny Merieke Ri Berit Might Makes Right Mind Flayer Mouth to Mouth Neural Network New Blood Nicol Bolas, Planeswalker Nihiloor Old Man of the Sea

The card was one of the biggest risers during the pandemic boom, as it went from sub-$20,000 in 2017 to more than $310,000 in 2021 with no publicly recorded sales in the years between, according to Card Ladder
So if you can find some, I assume they are non-violent