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17 May 2024: Card library updated.

Boon of Boseiju

1G · Instant

Target creature gets +X/+X until end of turn, where X is the greatest mana value among permanents you control. Untap it.

Similar cards

Color identity:
NameManaTypeText
Berserk GInstant Cast this spell only before the combat damage step. Target creature gains trample and gets +X/+0 until end of turn, where X is its power. At the beginning of the next end step, destroy that creature if it attacked this turn.
Geyadrone Dihada 1UBRLegendary Planeswalker — Dihada Protection from permanents with corruption counters on them [+1]: Each opponent loses 2 life and you gain 2 life. Put a corruption counter on up to one other target creature or planeswalker. [−3]: Gain control of target creature or planeswalker until end of turn. Untap it and put a corruption counter on it. It gains haste until end of turn. [−7]: Gain control of each permanent with a corruption counter on it. Loyalty 4
Ajani, Caller of the Pride 1WWLegendary Planeswalker — Ajani [+1]: Put a +1/+1 counter on up to one target creature. [−3]: Target creature gains flying and double strike until end of turn. [−8]: Create X 2/2 white Cat creature tokens, where X is your life total. Loyalty 4
Drain Power UUSorcery Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.
Grimgrin, Corpse-Born 3UBLegendary Creature — Zombie Warrior Grimgrin, Corpse-Born enters the battlefield tapped and doesn't untap during your untap step. Sacrifice another creature: Untap Grimgrin and put a +1/+1 counter on it. Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin. 5/5
League Guildmage URCreature — Human Wizard {3}{U}, {T}: Draw a card. {X}{R}, {T}: Copy target instant or sorcery spell you control with mana value X. You may choose new targets for the copy. 2/2
Dredging Claw 2Artifact — Equipment Equipped creature gets +1/+0 and has menace. (It can't be blocked except by two or more creatures.) Whenever a creature enters the battlefield from your graveyard, you may attach Dredging Claw to it. Equip {1}{B} ({1}{B}: Attach to target creature you control. Equip only as a sorcery.)
Fraying Sanity 2UEnchantment — Aura Curse Enchant player At the beginning of each end step, enchanted player mills X cards, where X is the number of cards put into their graveyard from anywhere this turn.
Seafloor Stalker 2UCreature — Merfolk Rogue {4}{U}: Seafloor Stalker gets +1/+0 until end of turn and can't be blocked this turn. This ability costs {1} less to activate for each creature in your party. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) 2/3
North Star 4Artifact {4}, {T}: For one spell this turn, you may spend mana as though it were mana of any type to pay that spell's mana cost. (Additional costs are still paid normally.)
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