Tayam, Luminous Enigma + Metastatic Evangel + Cryptic Trilobite + Basking Broodscale + Boromir, Warden of the Tower

Tayam, Luminous Enigma

Metastatic Evangel

Cryptic Trilobite

Basking Broodscale

Boromir, Warden of the Tower

How it works

1. Cast Boromir by paying its mana cost if it is in your hand. Otherwise, activate Tayam by paying 3 and removing three counters from creatures you control, causing you to mill three cards and return Boromir from your graveyard to the battlefield with a vigilance counter on it.
2. When Boromir enters the battlefield, Metastatic Evangel triggers, causing you to put a +1/+1 counter on Cryptic Trilobite and Basking Broodscale and a vigilance counter on Boromir.
3. Basking Broodscale triggers, creating a 0/1 Eldrazi Spawn creature token that enters with a vigilance counter on it.
4. Activate Cryptic Trilobite by removing a +1/+1 counter from it, adding CC that can only be spent to activate abilities.
5. Activate the Eldrazi Spawn by sacrificing it, adding C.
6. Activate Tayam by paying 3, removing both vigilance counters from Boromir and another counter from a creature you control.
7. Holding priority, activate Boromir by sacrificing it.
8. Resolve the Tayam ability, causing you to mill three cards and return Boromir from your graveyard to the battlefield with a vigilance counter on it.
9. Repeat from step 2.
10. Repeat.