Shimmering Wings is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.) Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.) : Return this Aura to its owner's hand.

Complete guide

Shimmering Wings is a versatile blue Aura that provides evasion and exceptional utility. Because it can return to your hand for a single blue mana, it serves as a repeatable spell trigger and a way to protect your investment from removal.

Granting Evasion

At its core, Shimmering Wings is a low-cost enchantment that grants the enchanted creature flying. This simple keyword allows your creatures to soar over ground-based blockers, ensuring your damage gets through to your opponent or their planeswalkers.

The Self-Bounce Ability

The activated ability '{U}: Return this Aura to its owner's hand' is what makes Shimmering Wings special. You can activate this at any time you have priority, even in response to a spell that would destroy the creature or the enchantment itself. Because the cost is so low, you can cast it and bounce it multiple times in a single turn to trigger 'constellation' or 'magecraft' abilities.

Timing and Strategy

It is best to leave a single blue mana open when you have Shimmering Wings on the battlefield. If your opponent targets the enchanted creature with a removal spell, you can return the Aura to your hand. While the creature will still be targeted, you save the Aura card and can recast it later on a new threat.

Interaction examples

Triggering Opponent's Mystic Remora

Mystic Remora

If your opponent controls Mystic Remora, every time you cast Shimmering Wings, the Remora's ability will trigger. You must decide if giving your creature flying is worth allowing your opponent to draw a card or forcing them to pay {4}. If you bounce and recast Shimmering Wings repeatedly, they could draw many cards.

Construct Token Evasion

Urza's Saga

After Urza's Saga reaches its second lore counter, you can create a large Construct artifact creature token. By casting Shimmering Wings on that token, you give your massive Construct flying, allowing it to bypass your opponent's ground forces for a lethal attack.

Rescuing the Aura

If your opponent casts a spell like Disenchant targeting Shimmering Wings, you can respond by paying {U} to return it to your hand. Shimmering Wings returns to your hand before Disenchant resolves, causing the opponent's spell to fizzle because its target is no longer on the battlefield.

Guide written with AI from the official text and rulings. Official English text prevails.