Enter Celestine, the Living Saint, which provides you with a really big payoff for gaining a huge amount of life
You can use Wheel of Fate to punish your opponents with cards like Sheoldred, the Apocalypse to damage them for each card they draw, or to turn it into a pure discard spell with the planeswalker Narset, Parter of Veils since she prevents your opponents from drawing more than one card each turn
Given Gardevoir is one of the most popular Pokmon in the franchise, its likely that this cards value will retain value quite well
As Slicer, High-Speed Antagonist it switches out double strike for first strike, keeping haste, and when it deals combat damage to a player, it converts back to its front side
If you have a way to intentionally ping your own creatures, Silverclad Ferocidons can clear out a lot of the board for you
The goal is to drop a Primeval Titan on turn four which lets you go digging through your deck for two more lands when it comes into play