Deep-Sea Kraken can't be blocked.
Suspend 9—2U (Rather than cast this card from your hand, you may pay 2U 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.)
Whenever an opponent casts a spell, if Deep-Sea Kraken is suspended, remove a time counter from it.

NOTE: Stock image, not actual card.