When Reflector Mage enters the battlefield, return target creature an opponent controls to its owner's hand. That creature's owner can't cast spells with the same name as that creature until your next turn.
If an opponent cast a red instant or sorcery spell this turn, you may pay {W} rather than pay this spell's mana cost. Prevent the next 3 damage that a source of your choice would deal to you and/or permanents you control this turn. If damage is prevented this way, Refraction Trap deals that much damage to any target.
Return up to two target permanent cards from your graveyard to your hand.
"When you get right down to it, the difference between death and life is just a membrane-enclosed environment maintained by a metabolic process." —Gulistan, Simic biomancer
Choose target creature. When that creature dies this turn, return a creature card from its owner's graveyard to the battlefield under the control of that creature's owner.
"You cannot imagine what eyes you may look through tomorrow." —Aerona, elder druid
Defender When Reito Sentinel enters the battlefield, target player mills three cards. {3}: Put target card from a graveyard on the bottom of its owner's library.
Relentless Rats gets +1/+1 for each other creature on the battlefield named Relentless Rats. A deck can have any number of cards named Relentless Rats.