For example, if the opponent controls a creature with mana value 3 and a planeswalker with mana value 5, they must exile the planeswalker
Flying The Goose Mother enters the battlefield with X +1/+1 counters on it
Think back to Ranger of Eos it found Soul Sisters, or Serra Ascendant, Mother of Runes maybe, or more recently, Esper Sentinel
I would have been fine with this at two mana, to be honest
Deathtouch Whenever this creature deals combat damage to a player or battle, return target creature card from your graveyard to the battlefield
High Utility, Low Price Loyal Apprentice Sakura-Tribe Elder Farhaven Elf Yavimaya Elder Loyal Guardian Rampaging Baloths Explore Grapple with the Past Grisly Salvage Stitch Together Putrefy Chain Reaction Decimate Explosive Vegetation Loyal Subordinate Acidic Slime Whiptongue Hydra Windgraces Judgment Khalni Heart Expedition Deathreap Ritual I might be over-rating Windgraces Judgment, but I liked that card, dang it