2012 mcdonalds pokemon cards Dwebble Axew - 12/12 - McDonald's

As a Shift card, players can put Belle, Hidden Archer onto an existing Belle card for a reduced price while transferring any existing tokens to it

Harking back to Living Weapon from New Phyrexia, this mechanic is a form of 'snap-on equipment', recently declared deciduous by Mark Rosewater

Enlightened Tutor, Mystical Tutor, Worldly Tutor, Vampiric Tutor, Demonic Tutor, Eladamri's Call, Grim Tutor, Green Sun's Zenith Tutors

Seriously, it would probably be quicker to name the cards from 2019 that weren't broken than to name the ones that were

If a green mana you add to your mana pool has certain restrictions or riders associated with it (for example, if it was produced by Great Hall of the Citadel), they'll apply to that mana no matter when you spend it