shiny raichu pokemon card Over the Brick – Pokémon GX (120) Your opponents Active Pokémon is now Paralyzed Top 5 Most Expensive Raichu

But honestly, animating this and attacking feels like an afterthought for this mech

Enchantment - Class Color tag templates(None) Enchantment (CTRL to add secondary) Instant Qty: 13 Price: $248.63 Absorb Counter target spell

Here are the first cards I'd add on a $20 budget

Julius Jumblemorph Ego Erasure Feisty Spikeling Firdoch Core Fire-Belly Changeling Flock Impostor Formless Genesis Game-Trail Changeling Gangly Stompling Ghostly Changeling Gladewalker Ritualist Graveshifter Guardian Gladewalker Impostor of the Sixth Pride Irregular Cohort Littjara Littjara Glade-Warden Littjara Kinseekers Masked Vandal Maskwood Nexus Mirror Entity Mischievous Sneakling Mistform Ultimus Mistwalker Moonglove Changeling Moritte of the Frost Morophon, the Boundless Mothdust Changeling Mutable Explorer Nameless Inversion Omni-Changeling Omo, Queen of Vesuva Overlord of the Hauntwoods Personify Prideful Feastling Realmwalker Rooftop Percher Runed Stalactite Shapesharer Shields of Velis Vel Sizzling Changeling Skeletal Changeling Springleaf Parade Stalactite Dagger Taurean Mauler Three Tree Mascot Turtleshell Changeling Universal Automaton Unsettled Mariner Valiant Changeling

The card should have legs in Pioneer thanks to Selesnya Angels kicking around, but outside of that, lifegain is a pretty niche strategy