If I play Void Seeker targeting a Pouty Poro with Deflect, can I choose not to pay the Deflect cost and what happens to the card and draw effect?

Ruling: When playing Void Seeker and choosing a unit with Deflect as the target, you must pay the Deflect cost. You cannot choose the target and then decide not to pay Deflect - paying Deflect is part of the cost of playing the spell, not an optional choice made afterward.

Nuances:

• The ability to choose a target with Deflect and then decline to pay only applies to triggered abilities (specifically reflexive triggers with "Do this:" text like Fallen Star or Icathian Rain), not to spells being played
• This represents a rules update from previous versions where the interaction worked differently