Manda, Kaiju of the Sea

This creature costs {1} less to cast for each blue creature you control and each instant or sorcery in your graveyard
Trample, First Strike
Debt {5}
This creature cannot be blocked by creatures with flying. This creature can block creatures with menace by itself. Whenever this creature deals combat damage to a player, draw 2 cards
{3}{u}{u}: Counter target spell. Draw a card
{u}{u},{t}: Counter target spell