Geistflame Reservoir [Innistrad: Double Feature]Set: Innistrad: Double Feature Type: Artifact Rarity: Rare Cost: {2}{R} Whenever you cast an instant or sorcery spell, put a charge counter on Geistflame Reservoir. {1}{R}, {T}, Remove any number of charge counters from Geistflame Reservoir: It deals that much damage to any target. {1}{R}, {T}: Exile the top card of your library. You may play that card this turn.

It's amazing the species can survive at all given such protracted periods of mate selection

Enchanted creatures each get +1/+1 and have hexproof

then discards half the cards in their hand

Set: Planeshift Type: Enchantment Rarity: Rare Cost: {2}{G} {3}{G}: Target opponent reveals a card at random from their hand

If it's an artifact card

Set: Planar Chaos Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Destroy all creatures

draw a card if you control the creature with the greatest toughness or tied for the greatest toughness

Spells you cast with mana value 5 or greater cost {1} less to cast and can't be countered

target opponent puts a card from their hand on top of their library

Set: Zendikar Rising Commander Type: Creature — Naga Rogue Rarity: Common Cost: {U} Slither Blade can't be blocked

Set: Commander 2021 Type: Legendary Creature — Human Wizard Rarity: Rare Cost: {4}{U} Magecraft — Whenever you cast or copy an instant or sorcery spell

Set: Commander 2020 Type: Legendary Creature — Angel Rarity: Mythic Cost: {5}{W}{W}{W} Flying