Infinite copies of creatures you controlInfinite creature tokensInfinite creature ETBInfinitely powerful creatures you control until end of turnInfinite magecraft triggersInfinite mana lands you control can produceInfinite storm countInfinite untap of lands you control
How it works
Activate up to seven lands you control by tapping them, adding at least 3.
Cast Seething Anger with buyback by paying 3, targeting Palinchron.
Orvar's first ability triggers, creating a token copy of Palinchron.
When the Palinchron token enters the battlefield, it triggers, untapping up to seven lands.
Resolve Seething Anger, giving the nontoken Palinchron +3/+0 until end of turn and returning Seething Anger to your hand.
Repeat.
If you control up to seven lands that can tap to produce at least 4, this combo nets infinite mana, which you can then target any creatures you control in step 2 to create infinite token copies of them.
This engine turns a humble pump spell into an overwhelming cascade of value by leveraging Orvar, the All-Form as a magical multiplier. Whenever you cast Seething Anger targeting your original Palinchron, Orvar's triggered ability steps in to conjure a fresh token copy of that leviathan. That newly arrived Palinchron token immediately triggers its enter-the-battlefield ability to untap your lands, easily generating enough mana to recast the Seething Anger with its buyback cost paid. By continuously looping this spell and recycling the token maker, you generate infinite mana alongside an endless army of Palinchron tokens—and because Seething Anger can target any creature you control, you can pivot this exact same loop to duplicate your entire board.