He stared at Slick Tunnel-Guide in his hand. The problem: the Guide died after making one creature unblockable. It was a one-shot.

Now the story unfolded:

But he had a second Guide’s Echo in hand.

Turn 4: Kaelen cast Slick Tunnel-Guide . It swung in, unblockable, dealing 1 damage. He sacrificed it, and granted “unblockable” to his Frost Lynx (a measly 2/2). The Lynx hit for 2, did nothing special.