mtg what are historic cards - All with Historic Does that mean I have

Both of those cards have ended up as the 101st card in several of my Low and Mid Power decks

This card enters unattached and stays on the battlefield if the creature leaves.) Slith Ascendant Rarity: Common TYPE: Creature SUBTYPE: Slith CMC: 3 Mana cost: USD: $0.09 EUR: 0.07 TIX: 0.03 EDHREC RANK: 24522 (1/1) Flying Whenever this creature deals combat damage to a player, put a +1/+1 counter on it

Varolz, the Scar-Striped $5 Varolz is a really interesting enabler that turns a bunch of near-useless cards in your graveyard into more gas

Then copy that spell

Each Dominaria United Commander deck comes with a Collector Booster Sample Pack, which contains two cards: 1 Rare or mythic rare that can be traditional foil, showcase, extended art, and/or a borderless planeswalker 1 Traditional foil showcase stained-glass uncommon Your Collector Booster Sample Pack might contain a special version of one of the cards in your Commander deck or a card perfect to add to another Commander deck