Kraken's Interdiction

Create X 8/8 Blue Tentacle creature tokens with defender and reach, where X is the number of creatures attacking you or a planeswalker you
control.
Exile them during the next end step
At the beginning of your next turn, discard cards
with converted mana cost adding up to ten or
more. If you cannot, your opponent summons
X 8/8 blue tentacle creature tokens with haste.