Tergrid pretends it isn't there and lashes out in anger at anyone who acknowledges its presence
Because this creature type is a fan favorite and has been around for a long time, we have no shortage of choices for zombies to lead our EDH decks
In a tournament at regular REL you may also keep it to yourself, but the judge may allow the opponent to put the trigger on the stack and resolve it
Rebuilding takes time since you need to build up to three rats (importantly, Verminister can sacrifice itself as one of the three), and it doesnt help against exile-based wraths like Farewell, but its better than shrugging
You can exile it temporarily by discarding three cards, which can help protect it from lethal combat damage, removal, and lots of other horrible, no good, very bad situations
There is no score below the optimal low average while there are 5 categories above the optimal high average