For example, Wrenn and Six is likely the strongest planeswalker in Legacy because of the interaction with Wasteland and the constraints that interaction along with cards like Daze put on the format in terms of casting spells that cost more than two mana
7 Meloetta ex Has Unique Interactions With Technical Machines Card Number: 167/086 Technical Machine cards are powerful Tool cards that allow Pokmon to use the attacks on these cards to change the match in various ways
With Irida, not only can you sustain Palkia ex, but you can also keep Vaporeon healthy on the Bench, as her effect applies to all Pokemon with Water Energy
Oddly, you sometimes dont want to have Purphoros become a creature in these spots, since it is granting the relevant haste and being a creature exposes it to exile removal like Eat to Extinction that would leave your haste threats unable to attack
My verdict: Houndoom is risky but worth it, ideal for aggressive players who thrive on tempo