Defender (This creature can't attack.) When Floodgate has flying, sacrifice it. When Floodgate leaves the battlefield, it deals damage equal to half the number of Islands you control, rounded down, to each nonblue creature without flying.
"Quick, Rhirhok—teach me to swim!"
—Makht, goblin casualty
![Floodgate [Mirage]](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/30b78de3-bccb-5812-9fca-06945e2dca83_fb34db13-8d8d-4231-9290-4d87c2b2a360.jpg?v=1698566390&width=1445)