Furious Mageswell

Shroud
If you would draw a card, you may instead search
your library for a card named Furious Mageswell,
reveal it, put it into your hand, then shuffle your
library.
Whenever Furious Mageswell attacks or blocks
alone, it gets +X/+X until end of turn for each
creature you control named Furious Mageswell,
where X is its power as the turn began.