Dynaheir, Invoker Adept + Orthion, Hero of Lavabrink + Kelpie Guide Combo

All permanents on the battlefield.

You control a mana-producing permanent that can tap to produce at least .

available

Activate Dynaheir by tapping it, copying the next non-mana ability you activate this turn that costs four or more mana.

Activate Kelpie Guide's first ability by tapping it, untapping Dynaheir.

Activate Dynaheir by tapping it, copying the next non-mana ability you activate this turn that costs four or more mana.

Activate Orthion's second ability by paying and tapping it, targeting Kelpie Guide.

Dynaheir triggers twice, copying Orthion's ability twice.

Resolve all Orthion triggers, creating fifteen token copies of Kelpie Guide with haste.

Activate a Kelpie Guide's first ability by tapping it, untapping a permanent that can tap to produce at least .

Activate the mana-producing permanent by tapping it, adding at least .

Repeat from step 7 until you have at least available.

Activate two Kelpie Guides' first abilities by tapping them, untapping Dynaheir and Orthion.

Repeat.

Once you have infinite Kelpie Guide tokens, you can use them to get infinite mana, and then activate Orthion targeting any other creature(s) you control.

Infinite untap of permanents you control

Infinite copies of creatures you control with haste

Infinite creature tokens with haste

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite mana permanents you control can produce

Infinite creature sacrifice triggers