You don't choose the new target for the spell until Willbender's triggered ability resolves. You must change the target if possible. However, you can't change the target to an illegal target. If there are no legal targets to choose from, the target isn't changed. It doesn't matter if the original target of that spell has somehow become illegal itself.
If a spell or ability targets multiple things, you can't target it with Willbender's triggered ability, even if all but one of those targets have become illegal.
If a spell or ability targets the same player or object multiple times, you can't target it with Willbender's ability.
This printing is one of 2 catalogued treatments from TD0 — the lineup includes Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #A33 of *Magic Online Theme Decks*, the set that shipped alongside the November 2010 Magic Online Theme Decks release.
Card type: Creature — Human Wizard, color identity blue, printed at uncommon. Uncommons fill the middle-tier slots in a standard booster configuration. Mana cost: {1}{U} (2 converted). Keyword abilities: Morph.
Legal in Modern, Legacy, Vintage, and Commander.
EDHrec ranks this card #8,131 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Eric Peterson. Rarix catalogs 232 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Eric Peterson
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If a spell with split second is on the stack, you can still respond by turning this creature face up and targeting that spell with the trigger. This is because split second only stops players from casting spells or activating abilities, while turning a creature face up is a special action.
The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.
