mtg dr who planechase cards Oversize Card Sleeves 3.6 inch x 5.1 inch (91 mm x 130 mm), Fit for Plane Chase Cards, Dr. Commander Deck, Large Card Sleeves : Toys & Games Common When you planeswalk to Dalek Intensive Care and at the beginning of your upkeep MTG Doctor Who Planechase Cards

This effect can't reduce the mana in that cost to less than one mana.

While there are a few cards like this, Gemstone Caverns is the only land that has this trait, and is one of the ways that players can win on the very first turn of the game under admittedly very specific circumstances

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Lightning Bolt would still be one of reds best spells with that restriction, and this card is better

It wouldnt make any sense for a little elf ranger to be nearly as strong as a kraken the size of mountains