If you only collect, they're still useful for dating when a card was printed and identifying which "generation" of the TCG it belongs to
Wigglytuff ex, similarly to Frosmoth, can put opposing Pokemon to sleep every turn using their attack, but they must be in the Active Spot to do so

Blue Wheels Instant (34) 1x An Offer You Can't Refuse 1x Arcane Denial 1x Brain Freeze 1x Brainstorm 1x Consider 1x Counterspell 1x Curate 1x Dig Through Time 1x Displace 1x Dream Twist 1x Fact or Fiction 1x Frantic Search 1x Gigadrowse 1x High Tide 1x Leap 1x March of Swirling Mist 1x Mental Note 1x Mission Briefing 1x Narset's Reversal 1x Obsessive Search 1x Otherworldly Gaze 1x Peek 1x Pongify 1x Quicken 1x Rewind 1x Rushing River 1x Shadow Rift 1x Silundi Vision Flip 1x Snap 1x Suspend 1x Thirst for Discovery 1x Thought Scour 1x Tolarian Winds 1x Winds of Rebuke Creature (18) 1x Archaeomancer 1x Archmage Emeritus 1x Baral, Chief of Compliance 1x Blighted Agent 1x Curious Homunculus Flip 1x Faerie Seer 1x Gadwick, the Wizened 1x Gale, Waterdeep Prodigy 1x Invisible Stalker 1x Jace's Archivist 1x Lier, Disciple of the Drowned 1x Looter il-Kor 1x Murmuring Mystic 1x Naru Meha, Master Wizard 1x Patron Wizard 1x Reservoir Kraken 1x Talrand, Sky Summoner 1x Wonder Land (32) Commander (1) Sorcery (11) 1x Careful Study 1x Crush of Tentacles 1x Flux 1x Gitaxian Probe 1x Ponder 1x Portent 1x Preordain 1x Rise from the Tides 1x Slip Through Space 1x Whelming Wave 1x Windfall Enchantment (2) Artifact (2) Maybeboard Suggestions Updates Add Comments Attention

(If it's a creature, it enters with a +1/+1 counter on it for each color of mana spent to cast it
If you do, shuffle your deck afterward