1. Friendly/Promotional:

"Click the link to claim your free 50 USDC now!"

"Get 50 USDC for free – just use this link to claim it!"

2. Professional:

"Claim your complimentary 50 USDC by following this link."

"Access your free 50 USDC through the link provided."

3. Casual/Excited:

"Grab your free 50 USDC now using this link!"

"Don't miss out – use this link to snag 50 USDC for free!"

Want it to sound more urgent, subtle, or something else?

$USDC