When Biblioplex Kraken enters the battlefield, scry 3. <i>(Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)</i>

Whenever Biblioplex Kraken attacks, you may return another creature you control to its owner's hand. If you do, Biblioplex Kraken can't be blocked this turn.

Deep-Sea Kraken can't be blocked.

Suspend 9— <i>(Rather than cast this card from your hand, you may pay and exile it with nine time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)</i>

Whenever an opponent casts a spell, if Deep-Sea Kraken is suspended, remove a time counter from it.

Whenever a player casts a blue spell, you may gain 1 life.

Trample

Polar Kraken enters the battlefield tapped.

Cumulative upkeep—Sacrifice a land. <i>(At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)</i>

: Monstrosity 4. <i>(If this creature isn't monstrous, put four +1/+1 counters on it and it becomes monstrous.)</i>

When Shipbreaker Kraken becomes monstrous, tap up to four target creatures. Those creatures don't untap during their controllers' untap steps for as long as you control Shipbreaker Kraken.

Whenever a Kraken, Leviathan, Octopus, or Serpent you control deals combat damage to a player, create a 9/9 blue Kraken creature token.

Tidal Kraken can't be blocked.