Miscalculation

Counter target spell unless its controller pays {2}.
Cycling {2} ({2}, Discard this card: Draw a card.)

Warden of Evos Isle

Flying
Creature spells with flying you cast cost {1} less to cast.

Enchant creature
Enchanted creature gets +2/+2 and has flying and shroud. (It can't be the target of spells or abilities.)

Flying
When this creature enters, untap up to five lands.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever this creature deals damage to an opponent, draw a card.

Flying
Cycling {2} ({2}, Discard this card: Draw a card.)

Counter target spell unless its controller pays {3}.

Creatures you control with flying get +1/+1.

Flying
When this creature enters, untap up to two lands.
Cycling {2} ({2}, Discard this card: Draw a card.)

Flying
{T}: This creature deals 1 damage to any target.

Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.