'Summon' cards

When Aswan Jaguar comes into play, choose a random creature type from those in target opponent's deck. {G}{G}, {T}: Bury target creature of the chosen type.

Flying {1}{G}{G}: Play a random effect.

{2}, {T}, Pay {R} for each target: Tap any number of random target creatures. Goblins tapped in this way do not untap during their controllers' next untap phases.

Phasing, cumulative upkeep {1}, echo {G}{G}, fading 3, bands with other Dinosaurs, protection from Homarids, snow-covered plainswalk, flanking, rampage 2

Flying During your upkeep, Prismatic Dragon becomes a random color permanently. {2}: Prismatic Dragon becomes a random color permanently.

When Rainbow Knights comes into play, it gains protection from a random color permanently. {1}: First strike until end of turn. {W}{W}: +0/+0, +1/+0 or +2/+0 until end of turn chosen at random.

You may cast Throat Wolf during an opponent's combat phase. Firstest strike (This creature deals combat damage to creatures before creatures with first strike.) After each opponent's first combat phase of each turn, there is an additional combat phase. Only Throat Wolf can attack during that combat phase.

Flying Whenever Xyru Specter deals damage to an opponent, that player discards a card unless they challenge you. If challenged, and you show them two black cards in your hand, they must discard two cards.