You can load them up with counters, double those counters with things like Vorinclex, Monstrous Raider, slap on some equipment like Sword of Fire and Ice, or enchant your unblockable creatures with Eldrazi Conscription and the like
But this can be reduced thanks to the card's convoke ability
These cards use loyalty counters and activated abilities that can swing games dramatically
Expect a TCG-first inventory singles, sealed product, and likely organized play for games like Pokemon, Magic: The Gathering, and Yu-Gi-Oh
CoroCoro Comic ran an illustration contest in Japan in 1997 and 1998, and the winners received this card
Mentor of the Meek [c]Mentor of the Meek[/c] fits very well in a white deck playing lots of small creatures