For those unfamiliar, the term aggro is short for aggressive, and in this case, refers to a strategy that seeks to put lots of low-cost cards into play and gain enough of an advantage to win before the opponent can stabilize
Planeswalkers can gain and lose loyalty in a few ways: Loyalty abilities You can add and remove loyalty counters from Planeswalkers by activating the loyalty abilities listed on the card
The fact that there are three Pokmon appearing on the card doesn't affect the number of Prize cards that are given away upon their defeat, as a triple tag team still only rewards the opponent with three Prize Cards
Its popularity is tied closely to its role in one of the three original starter lines
When this creature becomes untapped or you lose control of this creature, exile that creature
Erode A removal spell comparable to one of the all-time best (Path to Exile) is quite the thing to drop into Standard, and any white deck that wants a third removal spell (after PtE and Swords) is going to come looking for Erode