The main challenge when selecting a Pokmon is to choose strong Pokmon with convenient abilities and a low level of vulnerability
Notion Thief is a powerful threat to players who want to draw lots of cards, but if revealed off of a Tazri activation, will lose some of the surprise factor that makes it such a strong card
By letting you draw a card for each life gain trigger, Dawn of Hope can be incredibly effective
Needing to have one Hedron Alignment in your hand, one on the battlefield, and one in exile and your graveyard, this is an incredibly difficult win to assemble
Meanwhile, Forretress, Slowking and Dedenne shine as Tera Pokemon ex and Chien-Pao ex and others bring daunting strengths requiring courage to command
Consider the types and strengths of Pokmon in your deck