Coppertwaddle

You may play this card whenever any non-Threlm card is played. All effects of that card are negated. Then Coppertwaddle and that card are discarded

Favour

coppertwaddle (kåp-é'twodl)

1. a term for the residue left in a crucible, pot, or jar after a transmutational, or alchemical, experiment;
2. deriv. early French: coup de tradition (the blow/weight of tradition);
3. a medieval card game ;

Rule Clarification: This Favour can be played at ANY time during your or an opponents turn, i.e. whenever a non-Threlm card is played.