As far as hydra lords go reducing the cost of your important spells by 4 mana is a big incentive
And then, well, yes
Yuna (Main Set & Commander) When depicting Yuna on both of her cards, we knew that we had to focus in on her Summoner abilities

Accelerated Evolution Ademi of the Silkchutes Aegis of the Gods Airtight Alibi Akroma, Vision of Ixidor Alpha Authority Ancient of the Equinox Angelic Enforcer Angelic Overseer Angler Turtle Animus of Predation Aquatic Incursion Aquitect's Defenses Arboretum Elemental Arcane Lighthouse Archetype of Endurance As Luck Would Have It Ascended Lawmage Asceticism Atlantis Attacks Avabruck Caretaker Avalanche Caller Avatar Kyoshi Avatar Kyoshi, Earthbender Aven Fleetwing Barkhide Troll Basri, Tomorrow's Champion Bassara Tower Archer Bastion Inventor Battlefield Thaumaturge Beaming Defiance Bedrock Tortoise Belltoll Dragon Benthic Giant Bilbo's Ring Blacksmith's Skill Bleeding Effect Blinding Fog Blossoming Calm Blossoming Defense Bofur, Reliable Guardian Bombadil's Song Bonds of Mortality Breaker of Creation Brilliant Wings Bristling Hydra Bulwark Ox Captain America, Super-Soldier Carnage Tyrant Celestial Armor Champion's Helm Chase Inspiration Chromium, the Mutable Cloudform Cold-Water Snapper Collective Resistance Conifer Strider Copper Host Crusher Cradle of Safety Cragplate Baloth Cren of the Spider Brood Cryptothrall Crystal Barricade Crystalline Giant Curator's Ward Dawn's Truce Dawnglade Regent Deeproot Pilgrimage Deeproot Waters Defend the Rider Deification Detection Tower

Just a flash, or in later games, a tiny stab, perfectly representing its First Strike and Deathtouch abilities when it attacks
Were here to celebrate all the cards that make you laugh and cry, and especially the ones that make you reach for an aspirin