If one or more static abilities that apply to a creature entering the battlefield change its power or toughness, those abilities are considered when determining whether or not Symmetry Matrix's ability triggers. The same is true for replacement effects that apply to it, such as entering the battlefield with one or more +1/+1 counters or entering the battlefield as a copy of another creature.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.