altar cards mtg Phyrexian Whenever another permanent you control enters Altar of Dementia — The

Bender's Waterskin works best with cheap cantrips, but Wilderness Reclamation and Seedborn Muse are the gold standard: You can spend all your mana on your turn, then still untap to hold up whichever instants you like against your opponents

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Frenzied Baloth Hard to stop and harder to answer, Frenzied Baloth brings trample and haste on an uncounterable body while it also shuts down counterspells and damage prevention shenanigans

If I do this I'll draw X cards and then put X land cards from my hand onto the battlefield tapped where X is the sacrificed creature's power

You can exile a bunch of cards from yards with this, and the other modes are all useful