Blade Knight (Green) [DL09-EN007] Rare

Blade Knight (Green) [DL09-EN007] RareSet: Duelist League Promo Card type: Effect Monster Rarity: Rare Attack: 1600 Defense: 1000 While you have 1 or fewer cards in your hand, this card gains 400 ATK. If this is the only monster you control, negate the effects of Flip Effect Monsters it destroys by battle.

Set: Duels of the Planeswalkers Type: Instant Rarity: Common Cost: {1}{U} Counter target noncreature spell

—Hydra warning sign

Set: Strixhaven: School of Mages Prerelease Promos Type: Instant Rarity: Rare Cost: {B}{G} Choose target creature

you get an amount of {E} (energy counters) equal to the greatest power among creatures you control

I've seen some crazy ones

Now I know why he never laughed

put a +0/+1 counter on it

Set: Summer Magic / Edgar Type: Instant Rarity: Rare Cost: {1}{U} Return all artifacts target player owns to their hand

Set: Alliances Type: Artifact Rarity: Common Cost: {3} {1}

Set: Legendary Dragon Decks Card type: Normal Spell Rarity: Common (This card is also always treated as "Legendary Dragon Timaeus"

(The token has no counters and isn't monstrous

{T}: Add {B} for each Swamp you control