Hydroid, Maritime Marauder

Kraken you control have Islandwalk.
Whenever you deal combat damage to a player,
create a 1/1 Kraken Tentacle creature token.
If that creature was a Kraken, create two 1/1
Kraken Tentacle creature tokens instead.
{5}{u}, Sacrifice 8 Kraken Tentacle creature
tokens: create a legendary 8/8 Kraken creature
token with hexproof.