The Eldest Reborn, Core Prowler, Ashnod's Altar, Hex Parasite, and Bog Initiate

Prerequisites

• The Eldest Reborn on the battlefield
• Core Prowler on the battlefield
• Ashnod's Altar on the battlefield
• Hex Parasite on the battlefield
• Bog Initiate on the battlefield
• The Eldest Reborn has two lore counters on it

Steps

1. Sacrifice Core Prowler to Ashnod's Altar for
2. Proliferate the lore counter on The Eldest Reborn
3. Target Core Prowler with the saga trigger
4. In response to the saga trigger use Bog Initiate to turn one of the generic mana from Ashnod's Altar into and activate Hex Parasite having x be 1 targeting Eldest Reborn lowering it to two lore counters
5. Hex Parasite gets +1/+0 until end of turn
6. Resolve the saga trigger returning Core Prowler to the battlefield
7. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinitely powerful Hex Parasite until end of turn
• Infinite proliferate
• Infinite sacrifice triggers