Nivix Guildmage + Unexpected Windfall + Biomancer's Familiar

Nivix Guildmage

Unexpected Windfall

Biomancer's Familiar

How it works

1. Cast Unexpected Windfall by paying 2 and discarding a card.
2. Holding priority, activate Nivix Guildmage's second ability by paying , copying Unexpected Windfall.
3. Resolve the copy of Unexpected Windfall, creating two Treasure artifact tokens and causing you to draw two cards.
4. Activate both Treasures by tapping and sacrificing them, adding .
5. Repeat from step 2.

This engine uses Unexpected Windfall as a self-sustaining catalyst, leveraging its own mana-producing output to fuel a continuous loop of spell replication. Because Biomancer's Familiar reduces Nivix Guildmage's copy ability from {2}{U}{R} down to just {1}{U}{R}, the two Treasure tokens generated by the spell are exactly enough to pay for copying the next one. As you repeatedly copy and resolve the original Unexpected Windfall, Nivix Guildmage acts as the ultimate printing press, converting those treasures into an endless stream of card draw while leaving the original spell safely on the stack.