Thrumming Stone | Lapse of Certainty | Chandra, Hope's Beacon

(and one other card)

Cast any other spell, or wait for an opponent to cast one.
If you cast the spell,
Displacer Kitten triggers, blinking
Chandra.
Cast
Lapse of Certainty by paying ({2} magic symbol) ({W} magic symbol) , targeting that spell.
Chandra,
Displacer Kitten and
Thrumming Stone trigger.
Resolve the
Chandra trigger, creating a copy of
Lapse of Certainty, targeting the original
Lapse of Certainty.
Resolve the copy of
Lapse of Certainty, countering the original
Lapse of Certainty and putting it on top of your library.
Resolve the
Displacer Kitten trigger, blinking
Chandra.
Resolve the
Thrumming Stone trigger from step 3, revealing the top four cards of your library and casting
Lapse of Certainty without paying its mana cost.
Repeat from step 4.