Plumecreed Mentor | Creature | Bird Scout | Flying
Whenever Plumecreed Mentor or another creature you control with flying enters, put a +1/+1 counter on target creature you control without flying. | Henry Peters
3 LSV
Seedglaive Mentor | Creature | Mouse Soldier | Vigilance, haste
Valiant — Whenever Seedglaive Mentor becomes the target of a spell or ability you control for the first time each turn, put a +1/+1 counter on it. | Vincent Christiaens
3 LSV
Tidecaller Mentor | Creature | Rat Wizard | Menace
Threshold — When Tidecaller Mentor enters, if seven or more cards are in your graveyard, return up to one target nonland permanent to its owner's hand. | Irina Nordsol
3.5 LSV