Exiling them and countering them are both very effective, as anything prevents them from using their abilities
A historic spell is a spell that is legendary, is an artifact, or is a Saga
In this situation, we sacrifice Primus to Altar, which returns to the battlefield due to persist with no counters on it since the -1/-1 counter from persist and +1/+1 counter from Renata cancel each other out
It also removes your normal draw while in play and can bleed you out should you not hit the right things in time even if you manage to get ahead or stabilize before
This aura pumps the enchanted creature for each other creature that shares a creature type with it, which can be an absolute game-ender
Also, consider the size of the cabinet itself and whether it will fit in the space where you plan to store it