Nyxborn Behemoth

This spell costs less to cast, where X is the total power of creatures you control.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

This spell costs less to cast for each land card in your graveyard.

Vigilance, reach, trample

When this creature enters, other creatures you control get +3/+3 and gain trample until end of turn.

This spell costs less to cast, where X is the total toughness of creatures you control.

Defender

: Until end of turn, target creature you control gets +1/+0, gains "Whenever this creature deals combat damage to a player, draw cards equal to its toughness," and can attack as though it didn't have defender.

This spell costs less to cast for each creature your opponents control.

When this creature enters, put a +1/+1 counter on each other creature you control.

This spell costs less to cast for each counter among players and permanents.

Trample

This creature enters tapped.

This spell costs less to cast for each other spell cast this turn.

Trample, haste

Trample over planeswalkers (This creature can deal excess combat damage to the controller of the planeswalker it's attacking.)

Thrasta has hexproof as long as it entered this turn.