Appa, Steadfast Guardian + Hoarding Broodlord + Icewind Stalwart

Appa, Steadfast Guardian

Hoarding Broodlord

Icewind Stalwart

How it works

1. Cast Appa by paying 2.
2. When Appa enters, its first ability triggers, exiling Icewind Stalwart with the ability to cast it later from exile.
3. Cast Icewind Stalwart from exile by paying 0 and tapping Appa and another creature you control.
4. Appa's second ability triggers, creating a 1/1 Ally creature token.
5. When Icewind Stalwart enters, it triggers, blinking Appa.
6. Repeat from step 2.

This loop hinges on a clever cost-reduction engine driven by Hoarding Broodlord, whose static ability grants convoke to every spell you cast from exile. With Hoarding Broodlord already on the battlefield providing this discount, you flash in Appa, Steadfast Guardian, whose entrance triggers to exile Icewind Stalwart. Thanks to the broodlord's discount, you can cast Icewind Stalwart straight from exile for free by tapping Appa and another creature for convoke. Icewind Stalwart's entry then triggers to blink Appa, and the whole cycle repeats endlessly to generate a massive army of Ally tokens while fueling infinite storm and enters-the-battlefield triggers.