If the target creature's power is greater than or equal to Vodalian Mindsinger's power when the triggered ability resolves, it will be an illegal target for the ability, and you will not gain control of it
Hell, even looking at Teysa, Id clarify her as way more of a lifedrain deck a burn deck than anything else, as her typical play pattern is to double life manipulation triggers
With its combination of nostalgic characters like Charizard and modern favorites like Iono, the Japanese Shiny Treasures EX set has quickly gained in demand
With PSAs more affordable tiers currently paused, the cost per card is higher than its been in years, which raises the bar on whats actually worth sending in and makes the math more important than ever
Here, it gives the Islandwalk ability, which
Catch 'em all before they're gone