Spawn of Thraxes

Constellation — Whenever this creature or another enchantment you control enters, creatures your opponents control get -1/-1 until end of turn.

Flying, lifelink Heroic — Whenever you cast a spell that targets this creature, put a +1/+1 counter on this creature.

Squelching Leeches's power and toughness are each equal to the number of Swamps you control.

Constellation — Whenever this creature or another enchantment you control enters, draw a card.

Flash If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

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.

This creature enters with four +1/+1 counters on it. 2GG: Put X +1/+1 counters on this creature, where X is its power.

As Hall of Triumph enters, choose a color. Creatures you control of the chosen color get +1/+1.