At the beginning of your combat phase, Odric triggers, giving creatures you control indestructible until end of turn.
Activate Krark-Clan Shaman by sacrificing an artifact, dealing 1 damage to each creature without flying.
Sonic's second ability triggers for each creature you control with haste or flash that was dealt damage, creating that many tapped Treasure tokens.
Repeat from step 2.

Infinite tapped Treasure tokens

Infinite damage to creatures

Sonic the Hedgehog

Krark-Clan Shaman

Odric, Lunarch Marshal

Give Red Hulk and Boros Reckoner indestructible using Odric.
Deal damage to Red Hulk.
Red Hulk triggers, putting a +1/+1 counter on it and dealing damage to Boros Reckoner.
Boros Reckoner triggers, dealing damage to Red Hulk.
Repeat from step 3.

Infinite +1/+1 counters on a creature

Infinite damage to one opponent

Red Hulk

Boros Reckoner

Activate Kiora's first ability by putting a loyalty counter on it, preventing all damage done to and done by an opponent's planeswalker with three or less loyalty counters on it until your next turn.
At the beginning of your combat phase, Odric triggers, giving creatures you control haste, trample and trample over planeswalkers until end of turn.
Declare Port Razer as an attacker, attacking the planeswalker targeted by Kiora in step 1.
Deal combat damage to the planeswalker's controller due to Port Razer's trample over planeswalkers.
Port Razer triggers, untapping all creatures you control and giving you an additional combat phase after this one.
Repeat from step 2.

Infinite combat damage

Infinite combat phases

Infinite mana creatures you control can produce

Infinite untap of creatures you control

Port Razer

Thrasta, Tempest's Roar

Kiora, the Crashing Wave

Activate Dovin by removing a loyalty counter from it, preventing all damage done to and done by an opponent's planeswalker with three or less loyalty counters on it until your next turn.
At the beginning of your combat phase, Odric triggers, giving creatures you control haste, trample and trample over planeswalkers until end of turn.
Declare Port Razer as an attacker, attacking the planeswalker targeted by Dovin in step 1.
Deal combat damage to the planeswalker's controller due to Port Razer's trample over planeswalkers.
Port Razer triggers, untapping all creatures you control and giving you an additional combat phase after this one.
Repeat from step 2.

Dovin, Hand of Control

Combos with "Odric, Lunarch Marshal"