pokemon card potion 1999 Trainer 94/102 Base Set Shadowless Unlimited Type Potion - 106/122 - Uncommon

Cards like Recurring Nightmare and Liliana of the Veil can allow you to Gamble up something and be able to put it to some use regardless of what you discard

This can put up to three cards into the graveyard all on it's own, and it has passable stats to begin with

Personally, I view the additional synergy with other token-doublers as vastly less useful than retriggering all the relevant enters effects, so if youre looking for a commander in this category, go with Delney, Streetwise Lookout

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Luckily, many have tap-to-activate effects you can use in your first main phase if you dont want to risk them in combat