If you look at the text, you can get this trigger from your attacks, too, which is wicked
Gatta and Luzzu will prevent damage done to Walking Ballista, and Hardened Scales will mean that any damage done to the Ballista will translate to two new +1/+1 counters instead of one
The tokens and their progenitor equal the number of opponents you have
A zombie dwarf legend, which should tell you enough, Balthors two abilities are to strengthen minions, or bring back all red or black creatures in everyones graveyards to play
Cards with this text give you a facedown creature that you can later flip to surprise an opponent (an Altanak, the Thrice-Called once crushed me this way a real jump scare!)
As a rule, MTG players who want to find opponents to play against can always do this in any city, which cannot be said about Pokmon players