Infinite copies of creatures you control with hasteInfinite creature tokens with hasteInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana permanents you control can produceInfinite creature sacrifice triggers
How it works
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 6 and tapping it, targeting Kelpie Guide.
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 6 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.
This intricate loop relies on Dynaheir, Invoker Adept's ability to copy expensive non-mana abilities, setting the stage by duplicating Orthion, Hero of Lavabrink's massive six-mana activation to flood the board with fifteen token copies of Kelpie Guide. Because Kelpie Guide's untap ability can target permanents, a handful of these newly created guides can untap your mana sources to generate the required red mana while others continually refresh Dynaheir and Orthion. Once you achieve this self-sustaining loop of untapped permanents, you can generate infinite mana and endlessly repeat Orthion's activation to amass an overwhelming army of hasty creature tokens.