The Peregrine Dynamo [Dominaria United Commander] Condition:Moderately Played Arctic Aven gets +1/+1 as

Arctic Aven gets +1/+1 as long as you control a Plains

(When it dies

creatures you control gain trample and get +1/+1 for each basic land type among lands you control

Exile two cards from your graveyard: Grim Lavamancer deals 2 damage to any target

and you may spend mana as though it were mana of any color

The Peregrine Dynamo [Dominaria United Commander] Condition:Moderately Played Arctic Aven gets +1/+1 asSet: Dominaria United Commander Type: Legendary Artifact Creature Construct Rarity: Rare Cost: {3} Haste {1}, {T}: Copy target activated or triggered ability you control from another legendary source that's not a commander. You may choose new targets for the copy. (Mana abilities can't be targeted.) Jhoira stumbled upon an ally, not just a good source of spare parts.