The most commonly held argument is that of Promissory Estoppel, which, in massively reductive terms, says a promise can be legally binding, even if there was originally no legal declaration or intent
At this age, condition is the swing factor
They then take the points indicated on the card to try to tip the encounter in their favor
That branching identity is exactly why the Eeveelutions have become one of the most collected sub-categories in the entire hobby, with a card for every personality, every type, and every budget
Some designs may have exclusions
The best MTG proliferate cards are: Atraxa, Praetor's Voice Contagion Engine Contagion Clasp Thrummingbird Yawgmoth, Thran Physician Evolution Sage Vraska, Betrayal's Sting Sword of Truth and Justice What is MTG proliferate