Hydroid Krasis [Double Masters 2022]Set: Double Masters 2022 Type: Creature Jellyfish Hydra Beast Rarity: Rare Cost: {X}{G}{U} When you cast this spell, you gain half X life and draw half X cards. Round down each time. Flying, trample Hydroid Krasis enters the battlefield with X +1 +1 counters on it. Havoc is a small price to pay for data.

if it's on the battlefield

then you may cast an instant or sorcery spell with mana value equal to the number of charge counters on Brain in a Jar from your hand without paying its mana cost

If two cards that share a card type are discarded this way

"There shall be a vast shout and then a vaster silence

Set: Modern Masters Type: Sorcery Rarity: Uncommon Cost: {1}{U}{B} Target opponent reveals cards from the top of their library until four land cards are revealed

This spell costs {1} less to cast for each attacking creature you control

Set: Secret Lair Drop Series Type: Creature — Vampire Rarity: Rare Cost: {1}{B} Whenever Blood Artist or another creature dies

Weather is more predictable than the Izzet

Set: Ikoria: Lair of Behemoths Promos Type: Legendary Planeswalker — Narset Rarity: Mythic Cost: {1}{U}{R}{W} +1: You gain 2 life

Wandering Monster four or more times this game

IV — Create a Gold token

Set: Alpha Edition Type: Instant Rarity: Uncommon Cost: {2}{U} Psionic Blast deals 4 damage to any target and 2 damage to you