Universal pack points are the simple solution Instead of locking pack points to any one set, they should be an account-wide currency instead
If a card with escalate has three modes, you may pay the escalate cost once to choose two modes or twice to choose all three modes
Here are some historical examples
It's an iconic Magic card that was eventually replaced with the printing of Blightsteel Colossus

Act of Aggression Act of Treason Admiral Beckett Brass Agent of Treachery Aladdin Amped Up Angrath, the Flame-Chained Archmage's Charm Aura Graft Awaken the Sleeper Beguiler of Wills Besmirch Binding Grasp Blatant Thievery Bloody Betrayal Blue Sun's Twilight Bond of Passion Callous Oppressor Captivating Crew Captivating Vampire Catch // Release Catch // Release Caught Red-Handed Chamber of Manipulation Chef's Kiss Claim the Firstborn Coercive Recruiter Commandeer Connive // Concoct Connive // Concoct Conquer Conquering Manticore Control Magic Coveted Falcon Cunning Bandit Cunning Bandit Cytoplast Manipulator Dack Fayden Dominate Dominating Vampire Dominus of Fealty Dragonlord Silumgar Edea, Possessed Sorceress Eldrazi Obligator Empress Galina Emrakul, the Promised End 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 Giant's Grasp Glen Elendra Goatnap Govern the Guildless Grab the Reins Grip of Phyresis Grishnkh, Brash Instigator Hammer Helper Helm of Possession Hijack Hivis of the Scale In Thrall to the Pit Incessant Provocation Infernal Captor Infernal Denizen

All you need is a sacrifice outlet to transform