Arcbound Reclaimer + Showdown of the Skalds + Urza's Bauble + Crystal Skull, Isu Spyglass

Arcbound Reclaimer

Showdown of the Skalds

Urza's Bauble

Crystal Skull, Isu Spyglass

How it works

1. Cast Urza's Bauble either from your hand or from the top of your library by paying 0
2. Showdown of the Skalds triggers, putting a +1/+1 counter on Arcbound Reclaimer.
3. Activate Urza's Bauble by tapping and sacrificing it.
4. Activate Arcbound Reclaimer by removing a +1/+1 counter from it, putting Urza's Bauble from your graveyard onto the top of your library.
5. Repeat.

This clever loop lets you recast Urza's Bauble indefinitely by leveraging the static advantages of your battlefield setup. Crystal Skull, Isu Spyglass lets you play historic spells like the Bauble right off the top of your library, while Showdown of the Skalds provides the crucial +1/+1 counters each time you cast a spell to fuel Arcbound Reclaimer's ability. You simply sacrifice the Bauble to draw a card later, use the Reclaimer to recycle it back to the top of your library using the counter just granted by the Saga, and repeat the process.