Shrieking Drake + Leyline of Singularity + Relic of Legends

Shrieking Drake

Leyline of Singularity

Relic of Legends

How it works

1. Cast Shrieking Drake by paying .
2. When Shrieking Drake enters the battlefield, it triggers.
3. Holding priority, activate Relic of Legends' second ability by tapping Shrieking Drake, adding .
4. Resolve the Shrieking Drake trigger, returning it to your hand from the battlefield.
5. Repeat.

This elegant loop turns a humble bird into an engine of limitless repetition, powered entirely by the strange global restriction of Leyline of Singularity. Because that enchantment makes every nonland permanent legendary, your newly cast Shrieking Drake immediately qualifies to pay the activation cost of Relic of Legends, tapping the Drake for mana before its own enters-the-battlefield trigger forces it right back to your hand. You can then simply replay the Drake using the mana you just generated, netting an endless cycle of enters-and-leaves-the-battlefield triggers along with an astronomical storm count.