pahagen

I recently played in a Challenger event and was told I couldn't use tactics cards out of the new core box. Is this true? Seems really weird that the new cards wouldn't be in rotation, but the EO showed me this picture in the Challenger event document.

When Winter Soldier, Operative is within range 2 of MODOK, Scientist Supreme and MODOK gets targeted with an attack there are two things that get triggered simultaneously. Soldat activated's Compelled Minion ability and Genius Requires Sacrifice; Your Sacrifice to be Precise. My question is if the target of the attack is changed from MODOK to another character do the second and third sentences of Compelled Minion resolve? Can Winter soldier spend 2 power to make a 0 cost attack into the attacker? I know that the character will not get the cover because they wouldn't have an active leadership ability, but the rest of the ability only specifies "the allied character" instead of an "allied character with an active leadership". Thank you!