Flying, lifelink
Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature.
"Nyx may belong to the gods, but the skies of Theros are ours."
Flash (You may cast this spell any time you could cast an instant.)
At the beginning of each player's draw step, that player draws an additional card.
When this creature enters, return each creature your opponents control with toughness X or less to its owner's hand, where X is the number of Islands you control.
Constellation — Whenever this creature or another enchantment you control enters, creatures your opponents control get -1/-1 until end of turn.
Crippling fear precedes it. A foul stench accompanies it. Death follows in its wake.
Squelching Leeches's power and toughness are each equal to the number of Swamps you control.
Flash
If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.
Iroas and Mogis are as different in appearance as they are in personality.
Flying
When this creature enters, it deals damage to any target equal to the number of Mountains you control.
Sparks from Purphoros's forge fill the belly of every dragon.
Constellation — Whenever this creature or another enchantment you control enters, draw a card.
The emotional echoes of dryad gatherings attract lost souls.
This creature enters with four +1/+1 counters on it.
: Put X +1/+1 counters on this creature, where X is its power.
Travelers' tales claim that hydras bite off their own heads to make themselves deadlier.
As Hall of Triumph enters, choose a color.
Creatures you control of the chosen color get +1/+1.
Heroes act without thought of glory or reward. Accolades are a consequence, not a goal.